A/N: Hey guys, here is the first chapter! I'm sure you won't be disappointed with the Sterek but please let me know what you think of chapter one, as always I love to read your comments. You guys are amazing and I hope you like it so here goes, chapter one!

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"No, push in the clutch and then put it in drive," Derek said as Erica stalled the car for the third time.

"Ugh!" she groaned, "This looks a hell of a lot easier than it is."

"You'll get it," he said calmly.

"I know I said I wanted to get my licence but I'm almost regretting it," she said as she got the car started up again.

"You'll be fine, as long as you focus."

She sighed and took off slowly, driving back to the loft with barely a hitch. She parked in Derek's spot and they got out, heading back up to the flat. She tossed him the keys and he smiled a little.

"So you're going up to see Stiles tonight?" she asked.

"That's the plan," he said. "You sure you don't want to come this time? It'll give you a long drive to practice."

She shook her head. "I came up the last two times and I basically just feel like a burden when I do, you guys need your time."

"The offer still stands," Derek said.

"It's okay, I'll give this one a miss. I still have to figure out what I'm going to do with the rest of my miserable existence anyway," she shrugged.

"You could start by getting a job, something simple, easy. Or you could go to a community college like Scott and Isaac."

"Like I have the money for that," she scoffed.

"If you want to, just ask," he said and she rolled her eyes.

"I'm not going to take your charity Derek."

"It's not charity," he said as they headed inside and towards the kitchen.

"Shut up, it is too charity. I'll go looking for a job tomorrow with my totally empty resume."

"You'll be fine," Derek said and Erica gave him a warm smile as he handed her a glass of water.

He downed his own glass and walked around the bench to head upstairs.

"You mind if I―" Erica began.

"Stay as long as you want Erica," Derek called back before disappearing out of sight.

She smiled to herself. She would always ask him if she could stay, even though she had basically taken over Isaac's old room anyway.

There was at least half a closet full of her clothes, make up was a permanent fixture in the bathroom and the place always smelled of her perfume. Derek didn't seem to mind.

Erica walked into the bedroom and pulled out her phone, dialling Stiles' number and putting the phone to her ear as she collapsed into the duvet.

"Erica? What's up?" he said after the first four rings.

"Not much, just getting sick to death of driving lessons," she said and heard him chuckle down the line.

"Oh come on, I thought you were about to go take your test?"

"Not if I stall the damn thing at every set of lights," she said. "Whatever, Derek said he's coming to see you tonight, has it really been two weeks?"

"Take it from a person who hasn't had sex in that long, yes, it's been two weeks," he said and she rolled her eyes.

"It's gone by in a flash and you know it," she said.

"Does that mean you're getting some then?"

"I'm fairly self-sufficient Stiles."

"I did not need to know that," he said and she laughed.

"Yeah well, you know what they say, you want a job done right, do it yourself," she said.

"In my experience that is not the case," he said. "Can I call you later? I'm about to meet Kyle for lunch before our lecture."

"Sure, have fun."

"Always do," he said, hanging up the phone and shoving it down into his pocket.

It had been a big adjustment not seeing Derek every day, having to settle for once every two weeks was verging on painful. It was hard enough not seeing Scott or Erica or his dad, but there was just something about speaking to Derek every night that made the ache in him even greater when he had to fall asleep alone.

Needless to say he couldn't wait for him to come and visit this weekend.

"Hey, where the hell have you been?" he looked up to see Kyle walking over, book in his hand and his arms stretched to the sides.

"I have been exactly here," Stiles said, getting up from his spot on the bench. "You're the one who's late as per usual."

Kyle shrugged with his normal grin, "I guess you're right."

Kyle was Stiles' roommate, the two shared a small dorm room to the south of campus and he had become Stiles' closest friend at Berkeley. While he had few others there was something about Kyle that had just clicked, not to mention they shared an interest in anthropology and mythology.

"What's new then? I mean since I saw you this morning," he said and Stiles shrugged.

"Not a lot, just counting down the days until Derek gets here. It's one by the way, one day, not even, it's one half day," he said and Kyle laughed.

"I'm still sceptical as to whether this guy really exists," he said. "I never see him when he comes down here, and you don't even have a picture of the guy."

"Hey, he doesn't photograph well, okay?" he said, thinking of every picture he's ever tried to take of Derek and the way his eyes light up like a fault in the camera lens.

"So you say," he said.

"Is it my fault that when he comes down here we just want to spend the weekend alone in a hotel room or you know, generally away from campus?"

"If I had a boyfriend who was going to pay for my hotel room for the weekend I wouldn't leave it either," he said with a flirty flick of his eyebrows. "Then again, with you gone I can entertain in the dorm room so it's really win-win."

"Oh, like me being in the dorm room has ever stopped you before," Stiles said, giving him a look and Kyle let out a loud snort.

"You never make that bed of yours, how am I supposed to know when a pile of sheets is just that or when you're curled up under them?" he said. "I mean short of checking every time I come in with someone – which is slightly creepy – what other option do I have?"

"All I'm saying is that you're a terrible person and you should feel bad."

"Hurry up, I'm hungry," he said, clapping Stiles on the shoulder.

He only had one class on a Friday afternoon and then he was free for the weekend and this weekend was one to forget about his study and focus entirely on Derek.

He always booked them in to a hotel when he came down. The last place he wanted to be was in a dorm room. Not that it surprised Stiles all that much.

It was a reasonably long drive for Derek but he never even seemed to be affected by it all that much, then again he rarely seemed to be affected by much at all.

When he was on his way he sent Stiles a message and he would pack himself up and head over to the hotel of the week. Whenever he was leaving for the weekend and leaving Erica behind he would also send a message to Isaac to check in on her on one of the days he was gone.

Especially weeks like this one where the lonely feeling was starting to get to her.it wasn't good for werewolves to be alone. They're pack animals and even though part of them was human the part of them that wasn't would pine for those who weren't close by.

Isaac didn't have a problem with it. Erica did, she would yell at the both of them for babying her and for treating her like some fragile little bird who had fallen from the nest. Only they weren't worried that she had fallen, it was more that the other baby birds had flown free and she was still trying to get her wings working.

It was late afternoon when Isaac got the text, he was sitting on the couch reading when his phone buzzed from the coffee table beside him.

As he read the words on the screen he heard Scott pull into the driveway on his motorcycle and he couldn't help the smile that spread over his lips. He had been at work at the clinic while taking some classes in biology and health down at the community college.

He didn't know where he wanted to take his studies, but as he was beginning to realise that he understood less and less about himself and the way his body worked he found that he was increasingly interested in biological sciences. It helped greatly that Deaton was there beside him at work and willing to teach him even more that his studies could ever do.

"Hey, you're home early," Isaac said, looking up over the back of the couch.

"Last patient came in about an hour ago, Deaton was just giving me a hand with one of those questions I was having an issue with," he said, dropping his bag on the floor by the bench.

"You figure it out?"

"I think so," he said, walking over with a grin.

He leant over the couch and smiled as Isaac leant into him for a kiss.

"I'm going to shower, I smell like wet dog," he said, grabbing his shirt from the back of his shoulders and pulling it over his head.

Isaac snapped his book shut.

"Well, technically a shower isn't really going to fix that," he said and Scott turned around with a smile playing at his lips.

"Really?" he asked with a raise of his eyebrow.

"Like I've said before, I promised Stiles I wouldn't skimp on the sass while he's away," he said and Scott rolled his eyes.

"Stop doing things that Stiles tells you to do," he said as he turned into the hallway.

Isaac laughed to himself as he heard Scott turning on the shower taps.

"Hey you think we should invite Erica over tomorrow night?" he called, stretching out his overly-long limbs.

"Derek leaving her behind this time?" he called back.

"Yeah, apparently," he said. "Movie night?"

"So she can talk the whole way through again?"

"Oh come on, that was a terrible movie and her commentary actually makes it more amusing," he said.

Scott didn't say much so Isaac got up and pushed the bathroom door open a little wider.

"Is that a no?"

"I'm pretty sure she hates it when we pity-ask her to things," he said and Isaac watched him through the tempered glass.

"It's not a pity ask, I told you, I like her movie commentary."

"Yeah but Derek asked you to keep tabs on her to make sure she's okay, that's what she hates."

"Yeah, I guess you're right," Isaac said.

He watched Scott a few moments more, admiring the way each part of him moved, the way the water glided over his smooth brown skin. His hair stuck to the sides of his face and made his ears stick out and Isaac couldn't help but smile.

As Scott reached around his body with the soap in his hand Isaac's smile became a grin.

"Do you need a hand in there?" he asked and Scott turned around with narrowed eyes and a twitch of his lips that he couldn't hide.

"I was wondering how long you were going to stand there staring at me," he said.

Isaac laughed as he stripped out of his clothes and Scott just rolled his eyes as he quickly hopped in beside him.

Derek usually sent Stiles a message when he was on his way. Nothing over the top, just the name of the hotel they'd be staying in and that he was leaving.

That gave Stiles plenty of time to get there and settle himself in before Derek showed up.

Derek never picked fancy hotels, granted, they were nice but they were never extravagant. Stiles thought that Derek wouldn't know what to do with himself in a place like that, besides, the hotels he chose served their purpose more than adequately.

Stiles lay on the bed reading through one of his text books as he waited, flicking through the pages and trying to take it all in. He thoroughly enjoyed his anthropology classes, and though he often frustrated the lecturer with his questions and vigorous debate he knew his education was better for it.

Of course he wasn't getting anywhere with his study because he was checking his phone every few minutes for the time and he was even more restless than usual.

Finally, after what seemed like a few hours wait he heard the knock on the door and grinned as he leapt off the bed.

He was never quite sure why Derek knocked, there was always a key left for him at reception but for one reason or another the knock always came.

He wrenched the door open to see Derek standing there, perfect as he was.

He had his bag slung over his shoulder and a warm smile on his unshaven face. He looked strangely casual in his well-fitting t-shirt and jeans but as with everything else, it suited him.

"Finally," Stiles said as he grabbed him by the arm and dragged him in.

He shut the door behind him and Derek dropped his bag to the floor, his hands instantly reaching for Stiles' face and waist as he pushed him back against the wall.

Stiles' mouth opened as he let Derek pull him in for a kiss and he couldn't have stopped the sound that came from him even if he'd bothered to try. His hips arched and he held Derek into him even tighter.

Derek pulled his lips back a moment and Stiles took a much needed breath.

"Your heart is beating too fast," Derek said and Stiles just tried to close the non-existent gap between them.

"I wonder why that is Derek? I can't think of one reason why my heart might be pounding," he said and Derek rolled his eyes.

Stiles dragged his hand up and over Derek's chest and tangled his hand in his hair, pulling their lips together again and groaning as Derek's hips pressed forward and against the heat already growing in his pants.

"You don't want to go for dinner?" Derek asked, licking his lips as he stared down at him.

"Derek, I know your werewolf stomach needs more food than the usual non-wolfy person but I have a very tight sex schedule that I'd like to stick to so maybe you could think with another organ for at least ten minutes?" he said quickly and Derek laughed with an eyebrow shooting high up on his forehead.

"A sex schedule?" he said.

"Yeah, and if you'd shut up for a minute you'd figure out that it'll probably benefit the both of us," he said.

"Guess I can't argue with that," he said, grabbing Stiles tighter and pushing him towards the well-made double bed.

As he pushed him back down Stiles wriggled out of his shirt and began frantically unbuckling his belt as Derek stood above him doing the same, staring down at him with a heated gaze that made every inch of him throb.

"God, I've missed you..." Stiles said as Derek climbed over him, trailing wet kisses up over his stomach as he did.

"At least you didn't start without me this time," Derek purred against his neck.

"One time that happened and you won't let me forget it," he said, tilting his head to let Derek suck a small mark into his tender skin.

"Don't get me wrong, I enjoyed it," he said with a smirk.

"I'd say I didn't miss your arrogance but that would be a total lie," he said, nails dragging down Derek's back.

Derek's mouth finally found his again and Stiles let his tongue graze the rim of his upper lip, barely tracing his teeth before delving in deeper.

He had imagined what Derek tasted like, tried to keep it in his mind after the last time they had kissed and remember what it felt like.

His stubble was rough against his cheeks and the soft pink of his lips felt exactly the way that he'd imagined even before he'd had the chance to try it. His skin prickled with warmth, his temperature always running higher than average and the feel of his bare body searing into him was exactly what he'd been craving for the two weeks since he'd seen him.

"Hang on..." he panted, managing to pull his lips away and rolling over so he could crawl to where his backpack sat by the edge of the bed.

Derek watched him move and growled a little as he did.

Stiles turned back with a little grin as he tossed Derek the bottle.

"You're always prepared aren't you?" he said.

"Shut up and get on with it before one of us explodes," he said, wriggling back but not rolling off of his stomach.

Derek opened the cap on the bottle, rubbing the liquid over his fingers and reaching down to Stiles' hips. He propped himself up on his knees willingly and as Derek ran his fingers over his tight entrance he closed his eyes at the sound of Stiles' elicit moans.

"Holy fucking fuck," he breathed. "Come on Derek I am literally about to beg just... come on..."

Derek was in no mood to tease him, he urged one finger inside and bit down on his lip as he pushed back against him. He was used to it now, the gentle stretch of one finger. Two still felt tight but it was never enough for him.

He would claim that he wanted to make sure he was ready, that his laboured inch-by-inch approach was all for his benefit, but both of them knew that Derek loved to hear him ask for it. He loved to hear the string of nonsensical words that would fall from Stiles' mouth when he wanted nothing more than to have Derek inside him.

"Derek more... please just come on..." he said, the beads of sweat on his forehead making his hair damp and the eager pleading look in his eyes made Derek's glow crimson.

Stiles closed his eyes with a light chuckle and a grin, turning his head to hand between his shoulders as Derek pulled out his fingers and poured some more of the cool liquid into his hand.

It was only a moment before Stiles felt the smooth head of Derek's cock brushing his entrance. Then came the nonsensical words he had been expecting and the sound of his pleasured groans as Derek slowly urged inside him were just exquisite.

Stiles was always impatient, pushing himself back, trying to take him all at once but Derek knew he had to be patient. It had been two weeks since they had been able to do this and though Derek was under no illusions that Stiles hadn't been keeping himself entertained in that respect he was in no way prepared to hurt him for the sake of his urgency.

Besides, once he was pressing his hips against Stiles, rolling them slowly, he could address that urgency properly.

He let both of his hands slide to Stiles' hips, holding him steady as he let go of some of his control.

Stiles' fingers gripped the sheets and he let out moan after moan with each thrust of Derek's hips, thinking about how much he had missed the feel of it.

Derek leant over him, pressing their bodies together and reaching down to wrap his fingers around Stiles' solid cock. Stiles cussed and arched his back a little more, changing the angle and making Derek bite down on his lip.

His pace quickened and Stiles kept moaning over and over for him to keep going, it didn't matter, there was nothing that could stop Derek from getting them both over the edge.

"Oh fuck... yeah Derek, yes, yes..." Stiles moaned as his body began to tighten and he heard the pleasured growl from Derek brush past his ear and that was it.

Derek closed his eyes and pressed his face to the Side of Stiles' as he chased down his orgasm and let out breathy moans in Stiles' ear that made his skin tingle and buzz as he was engulfed in his own high.

He managed to keep himself held above him until the last wave washed over him and he was able to roll onto his back and throw his head into the pillows at the head of the bed.

Stiles rolled over too, looking over at Derek with an elated grin.

"I seriously missed you so much," he said and Derek shook his head.

"Apparently," he said and Stiles slapped at him lightly.

"Oh come on, just face it," he said and Derek looked over at him. "You missed me a hell of a lot too."

Derek just reached down to grab Stiles' hand and closed his eyes. They took a moment to recover before Stiles was rolling onto his side and just staring over at his boyfriend.

"Do you have to do that?" Derek asked, eyes still closed.

"Oh I'm sorry, I'm not allowed to look at you?"

"You're staring, I hate staring."

"You like it when I stare."

"No, I tolerate it," he said. "I don't like it."

"Ah Derek, don't ever change," Stiles said. "I've missed how grouchy you always are."

He just let out a groan and Stiles grinned.

There was silence for a moment before Derek looked over at Stiles with an eyebrow raised.

"So," he said and Stiles looked over. "This sex schedule..."

Stiles grinned to himself and shrugged.

"Well we've already finished the first part, the frantic 'need-you-now' sex that comes after not seeing each other for six weeks―"

"Two weeks Stiles," Derek said with a shake of his head.

"It's all the same, it might as well be six weeks," he said. "But anyway after that comes the hard and slow missionary sex, you know, all about sensory reception and just needing to be in contact with one another."

"You thought about this way too much," Derek said.

"And I'm not even finished yet, next comes... well I'm tossing up between sex in the shower or taking a bath together, we'll make that decision when we come to it I guess so maybe you should think about it. Then of course there's the hours of talking and lazy foreplay, which I know you're a fan of, and in the morning there'll be none of that half-assed morning sex we used to have when we had time, no. seeing as you won't be rough with me I'm going to be rough with you and believe me do I have some plans for that."

"Is that all?" Derek asked with an amused smile on his lips.

"That's all for the next twelve hours. I mean we'll probably need to eat at some point but the schedule comes first Derek, it's not really optional."

Derek shook his head again but nothing could shake the smile from Stiles' face.

"You know now that I think about it we're coming in close to the next item on the schedule," he said.

"How about we order room service and then we move on to your schedule," Derek said. "And don't make a joke about service."

"You're no fun."

So they agreed to order room service, which took far too long to arrive in Stiles' opinion. He talked to Derek about his classes and how college was going and when he thought he would come back to Beacon Hills, he still had a few things to do before the semester was over.

So they ate their food and picked up the schedule where they had left off.

Stiles had once tried to figure out what kind of sex he liked best, there had been graph work and everything, but everything had something different to it that he loved.

In this case it was easy to know what that was.

Derek lay atop him, fingers tangled with his and hips moving in slow thrusts that sent sparks all through Stiles' body. His forehead was pressed against his and his mouth was parted to let through his laboured breaths.

Stiles had his legs apart with Derek's body between them and his free hand plastered to the back of Derek's neck. The two were basically sharing the one breath but by far the thing about this that Stiles missed the most was the way Derek would periodically open his eyes to look at him, lips brushing his skin and the faintest whisper of his voice in its most vulnerable state.

The hotel had a decent sized bath and Stiles was eager to give it a try. Derek just scowled at him and jumped into the shower instead.

Stiles had made the argument that he hadn't had a bath since he'd figured out that Scott and Isaac had taken one in his bathroom back at the loft and Derek had just said 'maybe over his shoulder as he stood under the hot water.

Eventually he managed to convince him.

Whenever Stiles said something cliché or gave Derek one of his looks Derek would just growl at him.

They sat in the tub, Stiles leaning against Derek's side, eyes quietly closing as Derek ran his fingers through his damp hair. Derek tilted his head to the side and kissed his temple.

"Has it really been two weeks?" Stiles asked. "God, has it really been nearly a whole semester?"

"You say that every two weeks Stiles," Derek said.

"I know but... I can't believe it," he said. "Have you heard much from Boyd?"

"He's on his way to Portland," he said. "He's doing okay."

"That's it? That's all you know? Come on, has he found anything? Is he on any kind of trail?"

"Why don't you ask Erica this kind of stuff?"

"Uh, because you didn't bring her this time and I don't think this bath is built for three," Derek growled again and Stiles laughed to himself. "Relax tough guy I'm kidding."

"I don't ask him what he doesn't tell me Stiles," he said. "I check in to see if he needs anything and I let him do what he needs to."

"You miss having them all around don't you?"

Derek just sighed and didn't say anything.

It was hard not having all the members of his pack around, but he'd felt the pain of losing a pack before and this was nothing compared to that, so he wouldn't complain about it.

"Well, Jackson's having good fun. Danny posts a lot of stuff online from their trip. I mean Jackson's ruined plenty of photos by looking into the damn camera, but otherwise they seem to be enjoying their partying and sun tanning and you know, all the rest of the perks of travelling."

"That's good," Derek said.

"Allison's pretty photogenic though, she kind of makes Paris look like crap," he said. "Anyone'd be happy with her bone structure."

Derek didn't say anything and Stiles just rolled his eyes.

"Not so talkative are you?"

"Am I ever?"

"True, but you could at least pretend you want to hear about them."

Derek sighed, "Sorry."

"Derek don't―" Stiles sighed. "New rule, this is the no arguments tub. Also no complaining tub, you want to do that you get out in the cold."

"Stiles that―"

"I sense an argument or a complaint!"

Derek grumbled to himself and flicked a little water at Stiles' face.

"Real mature," he said.

Derek smiled. "So how's your roommate?"

"Who Kyle? He's fine, same as always. He thinks you're a figment of my imagination though," he said. "It's not my fault I can't get a front-on picture of you."

"It is your fault that you haven't introduced us," Derek said.

"Yeah but when you come down here, even if Erica comes too, I just want to spend time with you guys, you know? It's weird not having you all there all the time," he said. "It's weird not having Scott there, we basically haven't been apart since we were kids."

"Isaac said they want to come and visit," Derek said.

"I'll come back soon, when I get a break from study and exams and all the rest of it," he sighed.

Derek held him a little tighter and they were silent a moment.

"How's Lydia then?" Derek asked and Stiles just scoffed.

"Oh come on, you don't really want to know," he said and then yelped when Derek gave him a pinch.

"Not trying to start an argument are you," he said and Stiles laughed.

"Don't take my things and use them against me," he said. "And Lydia's... well, Lydia's pretty good. She's a genius and she knows it, and New York is kind of exactly her thing."

"And the other thing?" Derek asked.

"The Banshee thing?" he asked and Derek nodded.

They had told her not long after prom and they were still working on figuring out exactly what that was and what kind of things she could do. Unfortunately, there were so many different myths and stories there didn't seem to be a single one that fit.

Not to mention they knew very little about what she could do. She tried to stay unfazed about it but Stiles knew that it worried her, that not knowing what she was really capable of made her nervous.

"I send her some stuff every now and then, you know, things I can find out about it and things that might help," he said. "But she's Lydia and she's stubborn, I think she prefers to live in denial about the whole thing than actually face up to it and try and learn about it."

"You can't force people to study things Stiles."

"I know but don't you think it would be easier if she just read some of my research into what―"

Derek silenced him with a rough kiss to his mouth and Stiles slipped a little as Derek's shoulder came out from behind him.

"Stop over-thinking. If she wants your help, she'll ask," he said, getting up to grab a towel as he stepped out of the tub.

"I guess," he said, watching Derek until he threw a spare towel at his face.

"Out," he said.

"So bossy tonight," Stiles grinned.

Derek shook his head and walked back into the main bedroom.

Once Stiles had dried off he followed him in, climbing into bed beside him.

"So, hear any more from your favourite uncle?" he asked. "You know we should really start calling him Scar, you know, from the Lion King."

"It's bad enough that you and Isaac call him that," Derek said.

"Oh come on, it's hilarious."

"He's been sending postcards," Derek said with a furrow in his brow.

"What? From where?" he asked.

"Nowhere in particular, just generic postcards," he said. "I think he's still keeping his distance since the warehouse incident."

"You still think he was up to something?"

"He doesn't get himself involved in anything if there's nothing in it for him," he said.

"Postcards..." Stiles muttered. "The man has a deranged sense of humour."

"Some might say that about you too," Derek said.

"Mine is mischievous and or impish, I haven't quite made it to 'deranged' just yet," he said.

"You're still young," Derek said as he closed his eyes.

Stiles laughed and settled in beside him.

As he leant against Derek's warm side he listened for the sound of his heartbeat, the familiar 'thump-thump' from within his chest and he sighed.

"Have I told you how much I missed you?" he asked quietly.

"You always do Stiles," Derek said.

He liked the way his name sounded on his tongue and he liked the feel and smell of him. He always finds his scent to linger at least a few days on his clothes once he heads back to Beacon Hills but there was nothing as comforting as having Stiles in his arms.

That way he knew he was safe, could hear the contentment in his gentle breaths and each time they parted ways it became harder and harder to leave.

Sometimes he wondered if a change in scenery would be such a terrible thing after all.

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A/N: Hope you enjoyed it, please leave comments and let me know what you think. P.S. I have put Treacherous Affairs up for the Watty Awards 2015 so if you can get involved to support the story please do! Love you guys!