So, I'm going to preface this all with, do not read in public, for reasons to read about later.

I've clearly been bit by the writing bug if I keep churning out fics, so I hope I'm not stopping anytime soon.

Again, highly recommend not reading in public or around people that could question your facial expressions. Enjoy!

She should be focusing on the case, but she couldn't. Not with him sitting on the edge of her desk.

It was a delicious angle. The way his arms crossed, causing every muscle to become more pronounced made her want to lick every curve. His ass looked great and she couldn't help but notice the way his legs spread more than a normal guy needed to. But his size was anything but normal.

Her obvious sexualization of her boyfriend was more for her benefit to cure her frustration that was growing for this case.

For the past two weeks, they were trying to take down a drug dealer with connections to some of Chicago's rich and powerful. The previous plan had backfired when a suspect gave them the wrong information and later got killed. They were now back to square one, trying to figure out what they should do next.

Sighing deeply and trying to concentrate on what Atwater was saying, she got a whiff of her boyfriend's cologne. There was also a hint of his body wash that had her mind going back to the events of this morning. The memory had her squeezing her legs together, hoping to stop thinking about him. It didn't work, so she changed tactics, crossing her legs and leaning back into her chair.

Erin really shouldn't have done that as her new angle gave her a better angle of Jay. But she was so frustrated that she was going to let herself have this. There were days, like today, that she couldn't believe her partner was human. She was convinced that he was made to be this perfect man, her perfect man.

Not that she was complaining though.

The weather was unusually warm today, causing Jay to pick a short sleeve shirt grey shirt and his standard blue jeans. Seemed simple enough to others, but it had her drooling. How could a guy make something so simple be the hottest thing he could ever wear? Besides the rhetorical question, why did everything he wear make her inside mush?

Her internal monologue and stripping of her boyfriend was broken when her ears perked up at Voight's rough voice.

"We're taking this undercover. Erin and Kim, you'll be inside. Halstead, go talk to Platt. You and Ruzek are on patrol for the event."

He didn't leave room for argument before walking back into his office. Erin stood, planning to head to Kim so they could go get ready. But she was quickly stopped by Jay's hand grasping her wrist. His lips hovered over her ear, causing the dampness between her legs to become more noticeable to her sense.

"Don't think I don't know what you were thinking," he growled, all while keeping his voice low. "You just have to go and think those thoughts in the middle of the bullpen."

Jay didn't wait for an answer, just let go and called out to Ruzek, motioning for him to join downstairs to talk to Platt.

Jay Halstead was going to be the death of her.

"This sucks," Ruzek mumbled again, clearly not being shy about voicing his disdain for the current situation.

"That's the fifth time you've said then since we've been here, chill out," Jay replied, rolling his eyes in exaggeration.

"Yeah, but how did we end up with this job?" he mumbled.

"Cause you're not pretty enough," Kim said through the ear piece in their ears. "The pretty people get the best jobs, right Erin?"

"Why of course," Erin replied, and Jay could picture the smirk playing on her lips.

"Just focus on the job," said Antonio. "We've only got one shot."

Jay didn't mind it as much as it had been years since he's been on patrol, but Ruzek's complaining was becoming annoying. But the real frustration of the evening was aimed his other partner.

Lindsay and Burgess were undercover as socialites and potential patrons, so they took the opportunity to pull all the stops and tease the guys along the way. The second he saw Erin step out of the car earlier, well, he hasn't been able to keep his mind off her, and seeing her and Kim stroll through the gallery wasn't helping.

The dress she wore didn't scream Erin Lindsay, but she was undercover, playing the role of a local socialite. The navy dress stood out against her slightly tanned skin that was the result from their Wisconsin trip not long ago to escape the June heat. It fit every single one of her curves nicely while leaving something to be desired with the off the shoulder sleeves and the slit going up mid-thigh. The heels she wore made her legs look miles long and Jay knew his self-control was being tested tonight.

"Halstead, Ruzek," Antonio said, breaking Jay from his thoughts. "Guy coming your way, grey suit, black shirt. I need an ID."

Both men turned towards the people entering the building and sure enough, it was their suspect.

"We've got a positive," Jay whispered while he watched them enter the gallery.

"Okay, ladies, you're up."

His job was technically over, they were just there to get an ID on the guy before he went inside. It was now up to Lindsay and Burgess to seal the deal.

"You know," Ruzek said. "Maybe some of these patrol gigs aren't bad."

"Well you haven't even seen the worst of them," Jay replied. He was trying to pass the time until they got an order to shut up when the girls made contact with their suspect. But he supposed he could indulge Ruzek for the time being.

"A guy I was in the academy with, he got stuck working on Michigan Avenue during the holiday season. He swears he has never seen so many people on one street before. But my old partner on patrol, he got worked overtime once at the pedway. Said it was horrible and there are some crazies that go through there. We called that detail tunnel patrol."

Jay's story was interrupted by the sound of strangled coughing coming through the earpieces.

"Erin are you okay?" he heard Kim ask.

"I'm fine," she answered in a strangled voice. "My drink just went down the wrong way."

Jay felt some relief knowing his girlfriend was okay before he was suddenly hit with the realization a few moments later. But before he could recall the other story, he heard Antonio's voice over the comms.

"They've made contact."

He straightened up, adjusting his gun all while keeping an eye on the girls. Well, keeping an eye mostly on his girl.

"Easy there," Adam whispered, noticing the scowl on Jay's face while watching his girlfriend fawn over their suspect. Even while a part of him knew it was all fake, they were undercover, he couldn't help but feel jealous. And being able to hear every word of the conversation wasn't helping.

"Now what kind of men would send you ladies out all alone?" their suspect said. Jay felt his jealously rising.

"Only the ones that know we can handle it," Erin replied, flipping her hair over her shoulder.

"Oh sweetie, I think you can handle it. You both can."

The girls giggled, obviously not a normal thing for them. It's all a role, Jay had to remind himself.

Erin definitely wasn't helping at all. As their suspect turned to talk to Kim about a piece of art up for auction, Erin turned around, trying to be inconspicuous until her eyes landed on her boyfriend. She lingered on his face for a second before her eyes travelled south, stopping shortly before meeting his again. The wink she sent him had his blood rushing towards his dick.

He knew what was going on earlier at the district. She had been eyeing him all day and he knew how turned on she had been. Surprisingly, she had a good poker face, but he knew her, and he knew that she was trying to control her reactions.

But now he knew that this was payback. Erin Lindsay wasn't dumb, and she had a reason for everything. There was no way that she didn't strategically pick that dress he wanted to peel off her later or the heels he wanted to stay on or the choice to give him that look.

The other thing he knew was that this was going to be a long night.

"Well?" Adam asked as Antonio and Voight reentered the bullpen.

They had arrested their suspect after he tried to sell to Kim, which had been the goal all along. The guy had put up quite a fight, nothing they couldn't handle, before Jay had pinned him against a wall. It had been all on Jay to catch this guy after he got a lucky swing in at Ruzek and had him unconscious for a few minutes. But this was nothing compared to what got his heart pumping when he turned around.

He had cuffed the guy and turned him around rather quickly, only to find his girlfriend standing there, heels and all, with her own gun pointed towards their suspect. It had been a sight that turned him on like nothing else ever had.

Erin caught the look in his eye and the way she licked her lips when her eyes landed on his pants. He was hoping everything was still under control, but she did this to him.

There would be hell to pay later, he knew that.

They headed back to the district separately and Jay, for once, was okay with that. Cause he wasn't sure how he would act with her sitting so close to him. The girls had beaten him and Ruzek back and to Jay's delight, Erin hadn't changed out of her dress and heels yet.

If his luck kept up, there was a good chance he was getting lucky tonight.

"Guy lawyered up," Antonio said, eliciting a round of groans from everyone.

"But the lawyer won't be here until the morning, so he's spending the night in lock up. Everyone else, go home. Be back at 8," Voight said, heading into his office and closing the door.

That got a chorus of cheers and before she could scamper off, Jay grabbed Erin, pulling her close.

"Do not change. Meet me at the truck in ten."

"Well, in that case, I don't expect you to change either," she replied.

"Deal," he replied, before heading to the locker room to grab his bag.

"I was wondering when you were going to show up, officer," Erin said, leaning against the Sierra as she watched Jay walk out of the district.

Any other time, he would laugh at her for calling him "officer" but he was wound to tight right now.

"Actually, it's detective," he replied. "And I'm afraid we're going to need to have a little chat."

"What about?"

"About why you look so damn sexy."

Erin giggled, and despite her incessant giggling earlier, Jay loved the sound, because he knew he was the only one to bring it out of her.

"Well, I suppose we should take this somewhere more private."

She pushed off the driver's side door but before she could turn on her heel, Jay grabbed her arm again, pulling her back to kiss her, hard.

The hours of frustration were poured into that kiss and he heard Erin groan as his groin was pressed into her. His tongue slipped into her mouth when it opened, allowing him a taste of the wine she had earlier.

As he felt his pants become tighter, he knew he wasn't going to last long. Despite pulling away faster than his liking, and earning a groan from his girlfriend, it didn't matter. He needed this, now.

He threw their bags into the truck bed before opening the back door.

"Get in," he ordered, and Erin immediately complied.

Jay climbed in after her, and the door hadn't even closed before Erin was on him, pulling him closer and restarting their earlier kiss.

"You need to wear that uniform more often," she whispered into his mouth.

"Same could be said for that dress."

"I picked it just for you," she replied, sitting back to slip her heels off. "I felt you deserved something when you got stuck with Adam on patrol."

"Stop being a fucking tease," Jay said roughly, not being able to pull his eyes from the show she was putting on right in front of him. Somehow she managed to make taking heels off into the most provocative thing ever and he couldn't help the growl that escaped when she let her legs part.

"Like what you see?" she asked innocently, knowing she had his attention.

"Don't you dare tell me you went out with no underwear on."

"And if I did?" she shot back, a seductive smirk playing on her lips.

Jay didn't reply, just pulled her closer, his lips erasing the smirk on hers while his hand snaked up her dress to find her dripping wet. The gasp she let out told him she was just as would up as he was.

"Well, this will make things easier," he said, pulling back to readjust their positions. His dick was now straining against his pants and he needed relief only Erin could provide.

He shifted to the middle seat, trying to make do with the limited space in the backseat.

"Is this what you had in mind when we got the new truck?" she asked, straddling him while he fidgeted with the zipper.

"Can't lie, but yeah," he replied, reaching up to bring her face back down to his.

Before he could kiss her, his head fell back against the window, the feeling of her warm hands on his dick inching him closer to his breaking point.

"Erin," he said and before he could say anything else, she had lowered herself down on top of him.

Their simultaneous moans filled the cabin as they felt themselves become one. Jay's hands soon found her hips, his thumbs digging in as he urged her to move.

With her hands braced on either side of her boyfriend's head, Erin swiveled her hips, trying to tease him some more. His earlier comment and distracting looks all day had her needing to give payback. She had to admit that it gave her great pleasure in knowing she could get him so would up and have very little control, all while being the one thing to make him snap.

"Er, I swear to fucking god," he started, not loving the torture she was giving him.

"You'll what?"

Jay looked her square in the eye, finding nothing but lust in hers. The look in his own shot pleasure straight to her core, melting her and turning her on as she saw the hunger in his own.

"You don't even want to know," he replied before snapping his hips up.

"Fuck!" she yelled, the force both painful and pleasuring, something she had only come to experience with Jay.

He pounded into her with a pace that was brutal. His fingers dug into her hips and she was sure there would be bruises there tomorrow. She could also faintly hear fabric ripping but couldn't find it in her to care what it was.

Her own fingers dug into the leather of the seats and it wasn't before long that she fell onto her forearms. Her shoulders and thighs were burning but she was chasing that release, one that she could feel was coming soon.

"Jay," she cried, and it was seconds later she let go after feeling his fingers pinch her clit.

The scream that echoed through the Sierra was earth-shattering and only spurred Jay on. Erin was still riding her own high when Jay found his, his head falling forward and finding the soft skin of Erin's neck. He bit down, hard enough to leave a mark as her hot breath hit his ear.

She rolled off him, collapsing against the cool leather. It felt good on her skin and she watched her boyfriend try and catch his breath.

It was certainly a sight to see, seeing this strong and powerful man be exhausted and all thanks to her. Watching him catch his breath and not bothering to fix his appearance had her own hand creeping down towards her still sensitive center.

The soft moan that escaped her caused her eyes to flutter shut, but she could feel Jay's on her. Her fingers rubbed lazy circles around before dipping down and back up. The tension from before was back, just as strong and powerful and in a split-second decision, she opened her eyes.

Jay was transfixed on her, his own hand reaching to stroke his dick. His eyes soon met hers, and that hunger from earlier was replaced by lust, only spurring her on.

Just as they did in everything else, they fell into a rhythm and it wasn't long before they reached that high again.

They sat there a few more minutes, catching their breath again.

"Wow," Jay said, breaking the silence.

"Yeah," Erin replied, turning her head to look at him. "I'm guessing that's not what you expected to happen was it?"

Jay laughed before sitting up, trying to tuck himself back in. Erin shimmied her dress down before noticing where that rip came from earlier.

"Platt won't be happy with me," she said, looking down at where the slit in her dress was. There was still a slit, except now it reached up to her hip.

"Whoops," Jay said. "Guess this means we have to keep it."

"You can be the one to have to pay for a new dress."

"I can live with that," he said, learning over to kiss her. "I do have a question, though."

"Yeah?"

"Did you really go out with nothing on?"

The smirk on Erin's face told him what he didn't want to know, but her answer made him feel better.

"Of course, I didn't. But between you looking hot and your little story from earlier, I had to slip out of them. Figured it would speed things up at home."

Jay laughed at that, having completely forgotten his comments earlier.

"I never will tell Ruzek the actual meaning of that."

"Good, because that's our little secret. And besides, that story was all bullshit anyways. But I give you credit for being creative."

"He doesn't have to know that tunnel patrol means something completely different."

Erin laughed before moving towards the passenger seat. Her laughter was interrupted by the smack on her ass Jay had given her.

"Well, should we continue this at home? I don't think we want the district to get any more of a show."

"So that means you're down for round three?"

"I'm down," Erin replied, and Jay couldn't get to the driver's seat fast enough.