Keep the reviews coming, I love hearing from y'all. Sorry for such a long hiatus, my bad, Ill try to update more often. Heres the next prompt, I hope you enjoy.

P.S- Sorry if it sucks, I kinda suck at writing smut, but it is what it is. Also this happened before Nadia was their receptionist.

-Do one about Erin and Jay having a lot of sexual tension at work and then having sex in a closet-

It had been a long week for the intelligence team and it was only Thursday. So far they had taken down a drug dealer, and arrested two of the low level dealers below him. For everyone on the team it had been days at the station starting at 6am and lasting until 9pm. When everyone got home they went to sleep right away trying to catch up on sleep that they had lost in the past four days.

Erin was sitting at her desk staring off into space as Voight was speaking up at the board. Their next case wasn't officially going to start until next week because they were still gathering background information. Erin was tired, done with the day, in need of a beer, and sexually frustrated. While she was staring off into space she couldn't help but glance over at Halstead who was trying to listen but was looking off into space as well. Suddenly Erin found herself having thoughts about her partner that she shoudnt be having. He was leaning up against the front of his desk facing her and she couldn't help but notice how good he looked in his black pants and signature t shirt. Her eyes scanned the front of his body starting at his toes and leading up his legs. She paused for a brief moment at his inguinal area and looked for a little bit longer than she should have. She looked up his arms and admired his biceps and how they moved when he flexed his arms that were across his chest. He eyes traveled across his neck and she was suddenly snapped from her trance as she made eye contact with him. She looked back at Voight who was still preaching about something, she didn't know what. Erin felt a pink hue spread across her cheeks as she heard Halstead snicker from across the way. Its official, he saw me checking him out, she thought to herself. The only thing worse than wanting someone you cant have is them knowing about it, basically witnessing it.

"Whats so funny Halstead?" Voight said noting his snickering.

"Nothing, Sarge, its just really hot in here." Halstead said completely serious, not even looking at Erin because he knew that she would pickup on it.

"Alright, Im taking Olinsky and Atwater with me to go check out the house, and Antonio I want you and Ruzek to pick up his partner, then bring him back here for Lindsay and Halstead to interview." He paused and lookedaround to each of them and didn't notice anyone moving to get started. "Well lets go!" He shouted as they all went their separate ways.

After about 5 more minutes, everyone was gone leaving him and Erin alone in the bullpen. She got up from her desk to and walked past him to go to the break room and he couldn't help but let his eyes follow her. He waited until she was past him and then he turned his head slightly and followed her ass with his eyes. Sure it was wrong, but she was checking hi out earlier, so why couldn't he? Jay thought to himself. He studied her as she stopped in front of the fridge and opened the door leaning over to inspect the contents. He let out a slight groan as she bent over, slightly adjusting in his seat. He had a growing erection ever since he saw her checking him out. It started when she paused at his zipper, and it grew with each moment she looked at him. He wouldn't deny that he was attracted to her, it was clear, and everyone in the unit knew too. Erin was walking back to her desk empty handed and sat down at her desk with a grunt.

"Whats up?" Jay asked scooting up to his desk to conceal what was happening in his pants.

"Just the fact that there isn't any food and the fact that were stuck on desk duty." She said as she looked over at him.

"Yeah, not gonna lie, this does suck." Jay agreed, "Why is your dad in such a bad mood?" Jay asked teasing her.

"Not my dad, and you probably did something to piss him off, like usual." Erin said as she looked down to her files again.

"No that's not why hes mad." Jay said with a smirk on his face.

"Well then why?" Erin asked looking up at him.

"I think hes mad because he saw you checking me out earlier." He said with a growing smirk.

"I don't know what youre talking about." Erin said as she immediately looked back down at whatever was on her desk.

He took his chance because he knew she was feeling the same way, based on the way she was looking at him. He slid his chair out from behind his desk and wheeled over to her.

"I think you do." Jay said as he sat right next to her, facing her with his knees open.

"Kind of like how you checked me out when I was in the break room?" Erin asked turning her chair so she was facing him.

"Yeah kind of like that." Jay said scooting closer to her and placing his hand on her knee.

Erin welcomed the spark she felt run through her body as he ran his hand up her thigh. They leaned in closer to each other and Jay moved so he was breathing on Erins neck.

"Jay.." Erin tried to protest, but it came out as more of a moan.

He dragged his lips across her earlobe and the skin right below it as his hand traveled further up her thigh getting dangerously close to her heat.

"We cant.." She sighed as she felt his hand climb higher.

"Why?" Jay whispered as he kissed her neck.

She never answered, instead she leaned her neck so he had more access. He was her weakness, there wasn't anyone else who she would openly do this with at work, even if it were Severide when they were together. Jay stopped his hand as soon as he felt her giving in, just to tease her. It worked. Erin grabbed his hand and moved it up further to her heat. He wasn't surprised, she liked to take charge in every other aspect of their relationship, why not this one. She let out a slight moan as he started to palm her through her jeans and he scooted closer to her so that their legs were rubbing against each other. Erin ran her hand up his arm and around his neck guiding his lips from her neck to her lips. This was the first time they had every been this close to kissing so the two of them were nervous, even given the circumstances. He placed his lips on hers ever so slightly waiting to see what she would do, and a grin spread across her lips. He removed his hand from her heat hearing her sigh in response and he placed it on her waist pulling her closer to him. He looked at her eyes then back down to her lips before he crashed his onto hers. She pulled his neck, and Jay ran his tongue across her lower lip asking for entrance and Erin opened her mouth, welcoming the taste of her partner. The two stayed intertwined with each other for a few minutes before separating to take a breath. They rested their foreheads together as they took deep breaths to try and regain oxygen.

"Lets go." Jay said as he stood up grabbing Erins hand.

"Where are we going?" She asked looking at him with a smile.

"Locker room." He said as he pulled her down the hall.

As soon as they entered the room, Jay slammed Erin up against the nearest locker and started to pull her shirt over head. As soon as it was off Erin reached behind her back to undo her bra and Jay just stared at her chest. She pulled him by the collar of his shirt, trapping his lips in hers as her hands snaked down his chest to his belt buckle. Erin pulled his hips to hers and slowly started to grind her heat against his thigh trapping his growing erection to her heat. They both let out a moan together as she kept grinding against his thigh while she unhooked his belt. There wasn't anything soft about this, they just needed to let out all of the stress from the week and all of the sexual tension. It wasn't meant to be sensual, it was meant to be rough. As soon as Erin had his belt undone, she unzipped his pants and pulled them along with his briefs down to his ankles. She let out a soft groan as she saw his length pressed up against the bottom of his shirt. She started to undo the buttons but he just lifted his shirt from overhead, not to waste time. Once is shirt was off she grabbed his shoulders and brought their chests together. Her nipples were rubbing against his chest and he could feel them getting hard by the second, making him even harder. Jay knew they needed a release so he unbuttoned her pants and did the same thing Erin did, threw them down to her ankles along with her panties. Erin lifted her knee and wrapped her leg behind him as their mouths met again. She started to grind against his length, rubbing her moisture against him and Jay let out a low groan against her neck, feeling how wet she was. He reached between his length and her heat and started to rub her clit between his two fingers and a smug smile grew across his face as he looked down to Erin seeing her leaning her head back against the locker with her mouth agape and eyes screwed shut. It took every fiber of her being but she distracted herself from Jays amazing fingers for a second to grab his balls and slowly rub them in the palm of her hand. Hearing him moan just egged her on more so she moved up to his length and began to pump her hand.

"Enough foreplay." He moaned into her mouth as they continued to kiss.

Erin was turned on by that, she loved when Jay takes charge, or when he argues with Voight. Seeing Jay all pissed off was hot she had to admit. Jay grabbed Erin by the waist on both sides and lifted her up. She put her other knee behind Jay, providing him with the perfect angle to guide his length into her. Erin let out a little whimper as she felt his tip begin to enter her. He lowered her down the rest of the way so that his whole length was inside her, and he sat her there on his hips as he began to kiss her so that she could adjust to his size. He intertwined his fingers with hers and brought their hands above Erins head gaining leverage so he could thrust into her. As soon as he began to pump in and out of her, they both knew it wouldn't last long because one; they knew Antonio was coming back, and two; because they were so horny and had been waiting for this moment for so long, they just needed a quick release. Erin had her lips on Jays neck as he kept thrusting lining his collar with soft kisses, suddenly Jay changed angles and started to hit her deepest part and Erin moaned louder than expected. She threw her head back into the lockers panting as Jay kept in the same spot. Erin felt the heat begin to grown in her lower abdomen and her head began to get foggy, so she knew she was going to cum soon.

"Jay.." She panted, "Im going to cum."

Seeing her with her head tilted back, mouth agape, and her breasts bouncing up and down from his thrusts, made him almost cum then and there but he wanted to do it at the same time as her. He started to slam harder into her and he felt her walls twitching and closing around him, he could feel she was about to cum so he thrust into her one more time. Erin started to scream, moaning, his name. He let go of one of her hands and clasped it over her mouth to prevent her from giving them away as they both rode out the rest of their orgasms. Jay pulled out of her and lowered her to the ground while they were still panting. They leaned their foreheads together and looked into each other's eyes as they smiled, feeling relieved.

"Wow." Was all Erin could say as she leaned against the locker.

"Yeah." Jay let out a slight laugh as he agreed with her and reached to give her the shirt she had discarded earlier.

"Thanks." Erin said, noting the sweet gesture.

Jay pulled up his pants and briefs and as soon as they were buttoned he heard his phone start to ring. He ignored it for a few seconds and leaned down and gave Erin one last kiss before they had to get back to work because he knew that it was Antonio calling to let him know that they were almost there with the perp.