A/N: Hello! Here is the first chapter of my multi-chap JakexAmy fic. I wrote my first Brooklyn Nine-Nine fic super recently and got some really nice feedback so I thought I'd give it another shot! Jake and Amy are kind of ruining my life so I decided to write this in order to help me vent my feelings. I really hope that you enjoy it and I would absolutely LOVE to hear your feedback. Let me know if you'd be interested in me continuing this!

DISCLAIMER: I do not own Brooklyn Nine-Nine or any of the characters.

Amy's apartment, 1a.m.

Even though her head is spinning so badly that she can barely focus on the scene in front of her, Amy can't help herself from taking an unsteady step backwards. Her lower lip quivers, her face heats up in embarrassment, her hands shake. She looks down at her feet, avoiding Jake's eyes and swallowing hard.

"Amy, don't –"

"It's okay," she cuts him off, her voice croaky. "I get it."

She blinks back hot tears.

He doesn't want her.

One week before.

"You ready?" Amy asks Jake as she sits opposite him in the back of the stakeout van. Rosa sits to her left, Boyle on the other side of Jake.

"I was born ready," Jake answers with a grin, opening the door of the van and hopping out into the empty street.

Amy can't help but roll her eyes at him, ensuring that her microphone is covered up and her earpiece is in place one last time before following in the same direction.

"Just give the signal and we'll be there," Rosa assures her.

Amy nods gratefully, shutting the doors behind her and jogging after Jake. She doesn't know why Captain Holt keeps insisting that they work cases together. He claims it's because Amy and Jake make a good team but, honestly, Amy doesn't see it. She's pretty sure that she could handle things better alone.

Looking up, Amy notices that Jake is heading off down a different path than the one she had been intending to take.

"Where are you going?" she hisses, reluctantly trailing behind him. "The lockup is that way."

"There's probably a back exit," Jake answers, staring at her wide-eyed as if she's missing the obvious, "that doesn't get used as much. It will be easier to get into."

Amy purses her lips, irritated that she didn't think of that herself.

"Okay, fine."

Jake smiles smugly and turns back around, walking as casually as he can down the desolate alleyway. Amy stalks behind him, unable to keep the frown off of her face.

"Remember, if anyone asks we got lost looking for –"

"A strip club?" Jake suggests, arching an eyebrow.

"I was thinking more along the lines of a restaurant but whatever."

"Why would we end up in this deserted alley if we were looking for a restaurant?" he retorts seeming unconvinced. "I think my strip club idea is more believable."

"Why would we be going to a strip club?" Amy barks back, growing agitated.

"Will you two stop arguing," she suddenly hears Rosa's voice in her earpiece from where she is waiting in the stakeout van, reminding Amy of the task at hand. "You're giving me a headache."

"Yeah Amy," Jake adds teasingly. "Stop starting arguments. We haven't got time."

Amy tries to think of a witty response to that but she's so annoyed all she can manage is a growling exhale and a glower in Jake's direction.

They walk for a few minutes in silence until the back exit to the warehouse – which Amy suspects is stashed with illegal drugs and wads of money – comes into view. She narrows her eyes, slowing down her pace scanning the area. There doesn't seem to be anyone around that she can see.

"What did I tell you?" Jake breathes excitedly. "There would have been hardcore drug lords hanging around the front but back here there's no one, not even–"

An abrupt noise from the direction of the warehouse makes Amy jump and she swiftly grabs onto Jake, pulling him against the wall beside her.

"Just be quiet," she whispers, holding her breath.

He loses his grin and nods obediently, glancing over to where the noise came from.

There's a slam and a shudder, like a door being thrashed open, and then a series of low voices.

"What the fuck did I tell you?" a low, gravelly voice snarls. A thick thud and a startled gasp follow his words – someone being punched, Amy suspects. She raises an eyebrow at Jake.

"I told you, I'll get your money –" a different person replies sounding strained.

"Damn right you will," the first voice rumbles. "Or this is done. The whole thing."

Amy is a little confused but tries to keep up with their conversation, regardless. She hears some clanking from behind the doors and knows that she and Jake will have to get inside the warehouse in order to find out more.

"There are more inside," she mouths to Jake, gesturing to the warehouse.

"Once they leave, we need to check it out," he replies noiselessly, referring to the small group of men round the corner from them.

Amy nods, assuming that the violent men who stand in between them and their evidence would be returning back inside any second now.

Unfortunately, that's not what happens.

After a gruff cough, the sound of the men's clomping footsteps becomes clear to her. However, they don't seem to be going back in the direction they came… it sounds like they are coming right towards where Jake and Amy are hiding. She feels her throat grow dry.

"What do we do?" she mutters in a panic, turning to face Jake.

"Do you need us to come?" Rosa asks urgently into Amy's earpiece.

"No, you'll blow our cover!" Amy protests quietly.

"Santiago's right," Jake agrees. "We need to get inside before they realise we're cops or they'll just take the drugs and run."

So they can't blow their cover otherwise it will be impossible for them to get inside the warehouse and find any evidence. But there isn't enough time for them to run out of the alleyway before the group of thugs appears around the corner. And there is absolutely nowhere to hide.

Jake glances around anxiously, his gaze finally settling on her.

"Follow my lead," he instructs, stepping closer to her.

The thudding footsteps grow louder and louder until Amy can see the criminals appearing around the corner and heading towards them. She doesn't get a chance to look for more than a second, though, before she is suddenly being thrown backwards; pressed against the graffiti-covered wall behind her.

"What the –" she tries to protest but she doesn't manage to finish her sentence.

Jake wraps his arms around her, keeping her pinned to the wall, and smashes his mouth against hers before she can say another word.

"Just go with it," he murmurs as he kisses her hungrily, mashing their lips together and exhaling his warm breath into her mouth.

Amy is too shocked to move for a second. But then she realises that it will look stupid if she doesn't react. So she kisses him back. She runs her tongue along his chapped lips and pulls him closer, inhaling his musky scent and running a hand through his hair.

Objectively, Amy knows that Jake is only doing this so that they're cover doesn't get blown. So that the men walk past them and think that they're a horny couple rather than a pair of cops. However, in the heat of the moment, she can't help getting a little lost in his kiss. And, much to her irritation, it's good. He's good at it. He offers the exact right amount of pressure and doesn't overwhelm her with his tongue. She has never really thought about it (well, at least not a lot), but Jake Peralta is definitely a better kisser than she had imagined.

Jake snakes his arm around her waist and runs his hand down along her side, grabbing her ass and pushing his entire body against hers. Amy hears herself gasp and a small sound that scarily resembles a groan emits her mouth.

This is so wrong, she thinks to herself in horror, this is so, so wrong.

But it feels so good.

Amy's hand wraps around Jake's back, sliding over the worn leather of his jacket. He reacts to her touch, kissing the side of her mouth and along her jaw.

A poorly supressed snicker in her ear suddenly reminds Amy of the situation that she's currently in.

"Uh, Jake I think they're gone," Boyle's voice makes her jump and she quickly take a step away from Jake. Amy takes a few deep breaths and gulps. "Yep, they're definitely gone. The exit is all clear for you now," Boyle confirms.

Amy wipes her mouth and clears her throat, nodding.

"Right."

"But thanks for the porn show," Rosa adds, still laughing slightly. "This case was starting to suck but just made it ten times better."

Amy can feel her cheeks blazing red. She had completely forgotten that – obviously – the rest of the backup team could hear everything that was going on. She reassures herself with the fact that, thankfully, they couldn't see anything.

"Come on, let's catch these guys," Jake pulls her out of her trance as he runs off towards the exit of the warehouse, seeming completely unaffected.

Amy jogs after him, slightly breathlessly, hoping that he couldn't tell how mortifyingly into the kiss she had been just a moment ago.

She shakes her head as she hastily follows Jake, praying desperately that she isn't developing feelings for her stupid, childish, annoying, kind of attractive, talented-at-kissing, super lame partner.

Two days before.

Jake has known Charles for a long time now but he's never had to deal with a case of full-Boyle being this quite bad before.

It's proving to be a lot more difficult to deal with this time around – not just because Boyle's infatuation with Vivian is dangerously hard to control – but because Jake himself is so preoccupied with other things that he can barely focus on looking after Boyle.

Unfortunately for him, something that Jake has discovered recently is that in almost one hundred percent of situations where he gets stuck on a case is due to him being distracted by his dorky, unassuming partner.

It's driving him crazy.

He never in a million years thought that he would fall for someone like Amy – she is uptight and nothing like the girls that he usually dates.

But he just can't help it.

Ever since the kiss that they shared in order to make sure that their cover didn't get blown, he hasn't been able to get her out of his head. The way her lips melted against his, the soft gasps that she kept making, her fingers stroking down his neck. It was… insane. It was hot. He wants to do it again.

"Hey there Charles," Jake addresses Boyle, forcing himself to help his friend and face his Santiago dilemma another day. He needs to stop thinking about her before he explodes. "I thought maybe we should have a little chat about how crazy you're acting and how you're blowing this beyond repair."

It's obvious that he's referring to Boyle's irrational behaviour towards Vivian but Jake can't help the words reminding him a little of himself. He still can't believe he kissed Amy. What was he thinking? He doesn't regret it but… he's still not sure that it was the smartest thing to do.

Boyle sighs exasperatedly at Jake's words; still completely in denial. Jake is about to continue when he suddenly hears Amy's voice from behind him and he forgets all about what he had been about to say.

"Are you really qualified to give romantic advice?" she asks, sauntering over after overhearing his and Boyle's conversation.

Jake can't help but think that she's been avoiding him since the kiss; she says hello to him in the mornings and answers his direct questions but she hasn't particularly shown any interest in having a friendly chat. And Jake can understand why – he may have been a bit too full on when they were kissing. He accidentally let himself forget for a second that they were undercover and convinced himself that when she brushed her tongue on his it was because she wanted to, not because she had to.

So he's more than a little surprised when she marches over to Boyle's desk and stands opposite him with her arms folded and her eyebrows raised, waiting for an answer to her question.

"Excuse me?" is all Jake can think of to say.

"I mean, you're not exactly the king of mature relationships," she finishes.

Jake just blows off her comment, waving a hand in her direction dismissively.

"I fail to see how you can comment on my relationships," he replies, pointing out that, "the last date you went on was with me because you lost a bet."

The corners of Amy's mouth pull down into a frown. It's adorable.

"How do you know I haven't been on a date since that stupid one you forced me to go on?"

Jake looks at her, unable to hide his smirk.

"Have you?" he prompts.

"Well… no," Amy admits dejectedly. "But I could have."

Even though he knows it's a worrying thought to have, he can't help but be glad that she isn't dating anyone. Of course, it doesn't mean that he stands a chance but it makes him feel a little better all the same.

"I am more than qualified to assist Boyle with his relationship problems –" Jake continues in protest.

"My relationship has no problems!" Boyle insists.

Amy shrugs, looking slightly amused.

"You sure about that? I think Boyle might be better off alone."

"Now I'm just insulted," Jake answers, deadpan.

Amy rolls her eyes and tries (unsuccessfully) to hide her smile, holding her hands up in defeat.

"Fine. Do what you want. Just don't come running to me when you mess it all up."

She turns and walks away without another word; her hair flicking over her shoulder, her hips swaying and her shoes clicking against the panelled floor. Jake watches in captivation, Boyle's problems leaving his mind for a moment. All he can do is watch Amy hopelessly and try to stop his mouth from hanging open.

Yep. There's no denying it. He's definitely falling for her.

And it's definitely going to end badly.