This took me WAY too long, I AM SO SORRY!
Requested by; @YouLookSoCool

First encounter;
Nerves raked through your body as you entered New Scotland Yard. Today was your first day since transfer, and you weren't exactly pleased to work under your new DI. You'd heard he had a bit of an "outsourcing" issue, and weren't exactly enthralled to go on a case under him. Ignoring the annoyance that had suddenly flooded your system, you pushed past the glass doors, into the chaos of Scotland Yard. Immediately, someone ran directly into you, sending papers flying everywhere.
"A bit cliché." You muttered as the person began gathering up the papers they'd dropped. You crouched down to help them, immediately being met with an admittedly handsome man with silvery hair.
"Sorry about that. You must be detective l/n, right?" The question caught you off guard. The only person who had any of your personal details was...
"DI Lestrade." He introduced, holding out a hand to you. This was Mr. Outsource?! But... he looked so respectable, so kind!
"Uh, yeah." You accepted his hand hesitantly, wondering how the hell you were going to survive here. Finishing up with recollecting the papers, he escorted you to your desk, only to be immediately called out on a case.
"Are you ready, or do you need some time to settle-" You were already heading out the door, telling him to hurry up.
"If I wanted time to settle in, I would've gotten a desk job."

Friends That Do Stuff Together;
It had been a very long day. The case had been tough, and ones involving kids were always difficult and depressing. As a sort of reprieve, Lestrade invited you to the pub, just to get a bit of a well deserved break. You'd been there about an hour, but he was already on his third.
"Greg, maybe you should slow down a bit." You stopped him from raising the bottle again, concern lacing your eyes. He looked at you, and let out a shaky breath, pushing the bottle out of his own reach.
"Maybe you're right." He admitted, and your coworkers resumed their drinking, forgetting the day's worries.
"You alright, Greg?" Your hand cane gently onto his upper arm, and he sighed, running his fingers through his gorgeous silver hair.
"I'm fine, just some problems with the divorce." He admitted, and you nodded. He'd been trying to go through with this divorce for four months, and his cheating wife refused to let go, not wanting to give up what she considered 'her stuff'. It wasn't even like she still wanted to be married to him, she was just materialistic.
"Hey, it'll be over soon, at least." You gave him a small smile, and he returned it gratefully.
"You're right."

He realizes he loves you (Yes, I know this is out of order, doing Greg a bit different);
Another long day of catching criminals and attempting to work things out with his wife. It was odd though; every time she'd messed up, he'd always been so driven to make things better with them. But not this time... He couldn't keep saying the same little mantra, and work through her issues and his own. No, every time he tried to conjure up how much he'd long to see 'Mrs. Lestrade' again, he got thoughts of the newest detective. Again and again, he tried to tell himself that, no matter how bad his wife could be, he still loved her...
But t just wasn't true anymore. Anytime he thought of the word 'love', a different woman came to mind; Detective y/n l/n. Beautiful, smart, kind, and so much more. That's when he realized it...
Not that he minded.

Mistaken for a couple;
Going to the pub after work had become a regular thing for you and Greg. She was a new waitress, and you and Greg were just enjoying the evening, when she came by with the next round.
"Celebrating the anniversary, eh?" She asked cooly as she set the drinks onto the table. Greg was flushed and flustered in a minute, and you just chuckled.
"No, I don't date married men." You held up your hand to show that, while he had a ring, you, did not.
"Oh, I'm sorry! My mistake!" She apologized quickly, clearly embarrassed as she scampered off to take someone's order. Leaving Greg to wonder how you could act so casual about such a mistake. And you wondering what would've happened differently that night, had he been yours...

Meeting his wife {I'm actually glad he's been singled out, mainly because of this}
Since you and Greg had become more and more- what's the word? -friendly, there was bound to come a time where you met his wife. Though, it wasn't exactly a planned encounter. She came into New Scotland Yard one day, asking for 'Detective Inspector Lestrade', and, at first, no one knew who she was. This is Given that Donovan and Anderson had been off screwing each other, and the new secretary. So, they had asked you if she was alright to send back.
"Y/n..?" He called wearily, and you didn't hesitate to head up there. He wasn't the brightest man, but the secretary tried very hard, and it was something you had to appreciate. That, and he got you your favorite coffee every Monday, Tuesday, and Thursday (his work days).
"Yeah, Richie?" You responded, before stopping when you saw a woman standing there, looking a bit pissed off, and very irritable.
"I need to see Detective. Inspector. Lestrade." She demanded, and you weren't quite sure what to do.
"May I ask why, ma'am?" Your response was coupled with an understanding smile, but you got nothing but a scowl in return.
"I'm his wife." She stated as if it were obvious, and the light clicked in your head. From what you'd heard about her, you'd come to understand what a vile woman she really was, and how much better Greg deserved. This just confirmed your suspicions.
"Of course, ma'am! Right this way!" You escorted her back to Greg's office, and explained the situation, leaving them be, but one thing's you heard was distinct, enough.
"What do you mean you're 'filing for divorce'?!" And it didn't come from Greg.

Breaking up with that Jerk (yes, divorcing his wife)
The row had started the moment you left Greg's office, and given your desk was the closest to his office, it wasn't exactly hard to hear.
"I'm filing for divorce, simple as that." You had to admit, you were a tiny bit proud of him. That relationship was completely toxic, and he deserved way better.
"I know what you're doing! I want to know why!" She screeched, her voice sounding as if she just downed a smoothie of salt and nails. It continued like that, snowballing until Greg was also arguing, and it basically finished with;
"BECAUSE I DON'T LOVE YOU, ANYMORE!" Yep. And she left, with only a very colourful version of 'fine', and that her stuff would be gone by tomorrow. You entered his office to see him looking tired and worn.
"You did the right thing, trust me; that relationship wasn't good for you." You gently placed your hand on his shoulder, and felt all the tension just leave him.
"You're right."

Sharing your time
Going to the pub after work had quickly become your guys' thing. Of course, your coworkers often liked to interrupt this small, nice piece of time between you two. Today's jerks of the evening were 'Sally' and 'Phillip', as they preferred to be called outside of the 'office'. So, you and Greg tried desperately to hold onto the tradition, but conversation was constantly being cut out with those two's giddy behavior, and it was like neither could stay shut up for more than a minute unless the other was talking. Greg tried multiple times to strike up a conversation between the two of you, having little to no success when Sally started boasting about her new nephew.
"Too bad your lover's married, and you'll never get the same." You muttered to Greg, who had to stifle his laughter with his palm.

Asking out
It is never a good idea to ask out your boss. So, it's a good thing that you didn't have to. It was at a crime scene, and Sherlock had been called in, and you started to understand exactly why Greg called him in, and accept it. As Sherlock was deducing the crime scene, he suddenly noticed that Greg had seemed distracted. Looking around a bit, he saw the newest detective, you, and quickly filled in the pieces.
"You are looking for a man, approximately five seven. He's clever..." And that was really all Greg caught, because he was trying to decipher what you and John had started talking about. And why you were laughing. He knew John was charming, but you'd known the man for what? Twenty minutes?
"John, do stop flirting with her, you're distracting Graham." Sherlock pointed out, and quickly returned to deducing while both John and Greg flushed.
Of course, the detective couldn't just end with only deducing the crime scene, "Now, Detective l/n, I do believe you and George would both benefit by just going on a 'date', seeing as you both are completely infatuated with each other." He pointed out as your face flushed, and as he went to confront the Consulting Detective, you came a bit closer.
"SHERLOCK ! YOU DON'T JUS-" Greg argued, but before he could continue, you had something to say, too.
"I'd love to, Greg." You answered, much to everyone's surprise and shock.