((both endings take place a period of time after the first part, so that's why the outcome of your Unknown Lab is a little different))

You shook up your unknown lab sample happily, you had figured it out after only the second test, just a lithium-silicon nugget you made in a lab. Olly sat beside you, scratching his head at the U.S. History textbook.

"If the Americans just got independence from Britain, why would they fight them again in 1812? That's really dumb." He commented, scribbling down the answer to the set of his questions.

"As is a lot of the decisions America made back then." You scoffed, leaning back in the couch.

You originally came over to study for AP Psych with Mark, but he excused himself a mere two minutes into the study session once Oliver sat down to ask you a question about his U.S. History homework. So now you rested comfortably on their couch with your feet in Olly's lap and his textbook perched on your legs. The older twin had taken out his colored contacts on the second question, grumbling that he couldn't read anything with them in. So now his chocolate brown eyes were visible underneath his glasses. He almost looked like his brother, minus the tattoos, piercings, and the fact that Olly was in fact, two inches taller.

Of course, a stark difference was the fact that Olly carried himself so much differently. Mark wore his heart on his sleeve, and was only every confident with his closest friends. Olly was nearly the opposite, he was a borderline arrogant dickhead in public, but now as he stood on the brink of failing if he didn't complete this homework correctly, his nervous quirks came out. His teeth grazed over his lip ring with concentration, and he unintentionally tapped out a little beat with his pencil.

Finally, after nearly fifteen minutes of him working, and you quietly observing him, he broke the silence. A loud, guttural groan of frustration sprung from his throat as he threw the pencil across the room. It cracked against the wall, and broke in half. His violence didn't scare you, in fact, you found yourself laughing. Olly looked at you incredulously, a half-smile on his face.

"What's so funny, Y/N?"

"I was honestly contemplating holding a funereal for that poor pencil."

Your friend snorted at your response, walking over to pick up the yellow #2 pencil. "I'll just duct tape it back together."

"How about you take a break with me?"

"What do you suggest we do?"

You held your arms open wide from where you laid on the couch. "A really nice power nap sounds good to me."

He took your gesture literally, climbing on top of you, successfully crushing your chest. "Help! Can't breathe!" You choked out melodramatically. "My boobs are losing blood flow!"

"Oh no!" Olly joked, rolling off behind you. "Save the boobs!"

"I'm glad you feel that way." You turned on to your side to face him from where he was in between you and the back of the couch.

He took off his glasses and reached over you to set them on the coffee table. In this closeness, you breathed in the distinct smell you had always caught whiffs of before. But now it filled your nostrils and seemed to weave itself along in your brain, a pleasant feeling. Now with the frames off, he was looking a bit less like Mark.

"That's better." You thought aloud.

"What?"

"You're looking a bit more like Olly."

He had that heart-fluttering half-smile on again. "Thanks?"

"You're welcome, now, take a power nap while you can. I'll wake you in 24 minutes."

He looked at you, confused. "24 minutes?"

"NASA-approved time for a power nap that will actually refresh you and not make you more tired. Helps mental stimulation too."

"Stimulation?" He wiggled his eyebrows, causing you to snort and roll your eyes.

"Go. To. Sleep. Oliver. Jonas. Fischbach."

Olly closed his eyes, laying his head down on a pillow. "Fine, fine."

When his breathing became regular and a few soft snores peeped up every now and then, you set your watch on stopwatch for 24 minutes. Two minutes into his power nap, he moved his legs and ended up getting them tangled comfortably in yours. Five minutes in, his arm snaked around your waist to pull you closer. You had to cover your mouth to keep from giggling right in his ear. He was using you like a human teddy bear. Six minutes in, and you heard footsteps coming down the stairs. From your position, you couldn't see who it was, but knew that it was one of the Fischbachs and some awkwardness would ensue when they saw the spectacle on the couch.

You held your breath, hoping they would walk right past the couch, but instead the footsteps neared closer to the living room, and you were able to crane your neck to see Mark walking into the living room. He beelined right to you and Olly, and stopped at the coffee table when he saw that his brother's eyes were closed.

"Is Olly... sleeping?" He whispered, and you nodded, not daring to speak. Olly had made habits out of staying out late at night, so you wanted him to sleep while he could.

Mark seemed to understand, and pulled out his phone to text you. Thankfully your phone was on silent.

M: do you want to go pick up some pizza with me?

Y/N: doesn't dominos deliver?

M: yeah, but the good family-owned one on the corner doesn't

Y/N: olly has 18 minutes left of his nap, can it wait?

M: my order is ready for pickup in 8 minutes, i don't want to get cold pizza

Y/N: can't you get it yourself?

M: PLEASE, i have something really important to tell you

Y/N: fine, let me try to get up without waking olly

Carefully, you put your phone back in your back pocket. Slowly, you removed your legs, then lifted his arm and placed it back onto the couch. Olly stirred a little bit, but thankfully stayed asleep. With a sigh, you cracked your back and motioned for Mark to lead the way out the door. He popped his head into the office to tell his mom you guys were going to get pizza for dinner as you scribbled down a note for Olly for whenever he woke up, then walked out through the garage.

His gray sedan sat in its usual spot on the driveway, and you climbed into the front seat. It was a fairly old car, about seven years, but he got it detailed often, so it thankfully smelled alright.

At the pizza place, you followed Mark in, raising your eyebrow when he was extremely polite in holding the door open for you, and even rushed to open your car door coming back out. And he was the one holding the pizza, too. During the car ride back to his house, he tried to compliment you as often as possible, and you even picked up on the obvious flirtations.

Once your friend has parked back in his driveway, he ran to open your car door for you. You narrowed your eyes and remained in your seat, crossing your arms in protest. "Y/N? What's up?"

"Mark, get your ass back in this car."

He obliged, sitting back in the driver's seat, facing you. "Now what?"

"Now, you're going to tell me what the fuck you're doing."

"What I'm doing?"

"Don't play dumb with me," You pointed your finger menacingly at him. "This whole 'holding my door open' and 'being mushily flirty with me' and 'defending my honor in the presence of your brother when you know full well i can handle myself if i think it goes too far'. What the hell are you trying to do, Fischbach?"

Immediately, Mark knew he was caught. "Well, Y/N, I like you. A lot. And I have for a long time now. So, will you be my girlfriend?"

That wasn't quite the answer you were expecting. You were a smart girl, and that was one of the options you figured, but you honestly thought it was him just pulling a prank on you. He and his brothers used to do things like this all the time when you were younger.

"I'm sorry Mark, but I don't think I can." You answered, worried about breaking your best friend's heart. This wasn't how you wanted your friendship to end. Preferbly, you wanted it to end with one of your (in the distant future) deaths, not with you crushing his heart.

"Why?" He asked, with a startling lack of emotion on his face. "Is it because of Olly?"

Olly! You hoped he woke up from his nap and saw your note. What would he think of you abandoning him like that? You must have sat there with a dumbfounded look on your face for too long, because Mark's sad, dead, expression morphed into an ear-to-ear grin. Again, not quite what you were expecting.

"It is!" He clapped excitedly. "It is because of Olly! You like Olly!"

"Stop yelling like a maniac!" You shushed him, still very confused. "Was that all a ruse to get me to say I like Olly?"

"Yep!"

"So you never liked me in the first place?"

"Lord no." He snorted indignantly. "I'm planning on asking Amy out to homecoming."

You smiled, they'd be cute together. "Good, she's been rambling on about you in English for forever."

"Back to you and Olly, though. He's been such a coward about it, so I've been pretending to be interested in you to see if I can get him all riled up and finally ask you out."

"You're faking jealousy to try to get him jealous?"

"Well when you put it like that, it sounds like a bad sitcom plot."

You rubbed your temples. "That's because it is!"

Then, the garage door rumbled open, halting your conversation with Mark. A tall figure lumbered out lit from behind by the garage door opener's lights. Mark turned on his headlights, momentarily blinding his twin brother, who was the figure walking out.

He rolled down his window to talk to his brother, but Olly bypassed him and stopped at your door. You gulped, fearing that he was thinking the worst of you. Now that you had told Mark that you liked Olly, nervous butterflies swarmed not only in your stomach, but seemingly through your veins as well. The anxious tingles were everywhere as he opened your door, offering you a hand.

You took it, him helping you out of the car. He didn't let go of your hand, even after you were steady on your feet. "Y/N, can I talk to you for a second? Without my brother."

Again, he was so close to you that all you could do was nod with the comforting smell wrapped around in your senses. Oliver led you to the backyard, where they had an old playset they let the neighborhood kids use during the day. But now that the sun was down, it was empty. He sat down on a swing, and you awkwardly stood in front of him.

"I don't like Mark." You told him confidently. "As anything but a friend."

Oliver looked up, an inquisitive look on his features. "And what about me?"

The insects in your intestines tried to spill out of your mouth, but you swallowed them. "I like you. A lot." You were displeased that you were repeating the fake word Mark had said to you, so you changed them. "Hell, I fucking love you, Olly. I adore you, everything about you."

"Not Mark?"

"Not Mark." You confirmed, stepping forward. "He may be your twin, but that doesn't make you any less unique."

Olly jerked up, throwing his arms around you. You buried your face in his chest, taking in this moment. The hug was so strong that it forced Olly back onto the swing, except this time you were on top of him. It ended up with you straddling his lap as he gently swung the two of you. Kisses everywhere except the lips were shared in between murmurs of your favorite things about each other.

"You know Mark didn't actually like me, right?" You told him, pecking his nose.

"Really?" He kissed your forehead.

"Really, he just wanted to make you jealous." A kiss right beside his mouth.

"Mission accomplished, I don't think I'll let you two alone in the same room again." A kiss under your jaw.

"Lay off it, Olly." You rolled your eyes lovingly, trailing your lips over his chin.

"Fine." He went to kiss your cheek, but you slyly turned your head so that your lips collided.

After the perfect kiss, Olly chuckled, and you could feel his chest shake against yours. "You stole my move!"

"Better luck next time, Olly." You teased him, and he only brought your mouths together again in response.