Hi guys! So I wanted to write a jealous Jay fic but I came up with two very different ideas. I already posted one (jealous) but I still wanted to do this one cause I thought it was a little more light hearted, which is much more my style! I tried to make it a multi chapter fic with a case to follow and everything, but I thought it fit in much better with this story. I hope you enjoy! Thanks for all the support and reviews! I understand that everyone may not entirely like every part, or even any, of the fic they read from me, I do appreciate that you are taking the time out of your day to give it a shot!

Hailey was standing in Jay's kitchen waiting for the coffee to brew when she felt an arm wrap around her waist. This development was still fairly new but already comfortable. Already something she couldn't live without. She had wanted this for a long time but was too scared to ask for it. Her time spent in New York, while more enjoyable that she expected, made her realize that she couldn't wait any longer.

When she had walked through the airport that day she returned from New York, when she saw Jay standing there waiting for her, she threw all caution to the wind. As she picked up her pace the closer she got to him, she knew that this was her moment. He smiled at her and reached his arms out for a hug but was instead met with her arms thrown around his neck as she pulled him down to her lips. It was soft, tender, and unexpected. Jay didn't immediately react, but Hailey wasn't worried. She wasn't scared anymore, and she had no doubt that his lack of response was simply due to shock.

As she pulled away, she looked up to Jay, unintentionally tilting her head and smiling up at him. The look on his face was one that Hailey had never seen before. She couldn't quite place it and something about that made her uneasy. Confusion? Surprise? Some combination of the two with a little bit of…happy? Before she could figure it out, Jay's arms were around her waist pulling her into to him. This kiss, like the first one, was soft, tender and unexpected. As they parted and exchanged lovesick smiles, Jay bent over to pick up Hailey's suitcase. With his other hand, he reached for Hailey's hand and began to lead her to his truck.

Hank had asked for her to come see him as soon as she got in, so Jay headed for the district. It was still morning and Hailey was hoping that meant she would be able to start back at intelligence that day. The car ride over, Jay and Hailey didn't talk about their kiss. Instead, it was like any other day that they were riding to work together. Hailey thought about how easy it felt. How easily they went from intimate to work mode. She felt like this was something they could do. Be together, both at home and at work. That thing they were both so worried about, an outside relationship affecting work, suddenly felt like it was silly.

As they pulled up to the district, they spotted Vanessa in the parking lot leaning against the wall. They watched as she popped up and waved at them when she recognized Jay's truck.

"Someone's excited to see you."

"I hope she isn't the only one."

"No. No, she's not." Jay said as he chuckled.

As Jay turned the engine off and began to undo his seatbelt, Hailey knew she didn't have much time. She put her hand on his, stopping his motions, causing him to look up at her.

"Come over tonight."

"Umm. What about Vanessa?"

Just then Vanessa had appeared in Hailey's window. She tapped on it and waved excitedly at Hailey, asking her what she was doing. Jay and Hailey laughed at the way Vanessa bounced in place like her big sister was coming home for a visit from college. Hailey laughed and held up one finger to Vanessa to indicate she needed a minute. This earned a raised eyebrow from Vanessa as she turned away from the truck.

"We don't have to worry about Vanessa. Come over. Please?" Jay gave her a hand squeeze and smiled as he nodded yes.

Hailey felt the arms wrapped around her tug at her side, spinning her around to face him as she let out a chuckle. It's been 4 weeks since that first night together. Hailey was right, they didn't have to worry about Vanessa. She acted like it was completely normal that he was there the next morning. She didn't bat an eye when Hailey pressed a kiss to the back of his head as she left the kitchen to get ready. She didn't pry, there was no teasing, no questions, at least not in front of Jay. It was just another day, well except for the goofy smiles on all 3 of their faces.

Since then, they spent most nights together. Most times at Jay's, it was more comfortable for both of them to be intimate that way. Jay was pleasantly surprised to learn that Hailey was very vocal in the bedroom and since then, he insisted on his place for those kinds of activities. He loved seeing what he could do to her and he didn't want anything getting in the way of that. When there were hard cases or long days, when what was needed was just to be near each other, they would stay at Hailey's.

"Good morning." Jay said as he planted kisses on her. Being an early riser, Jay had been awake for quite some time. He had already had his morning jog, showered, and was dressed for the day when he found Hailey in the kitchen.

"Why are you already dressed?" Hailey pouted.

"I am having breakfast with Will." Jay chuckled as he continued to press kisses on Hailey's lips. "Only so many times I can turn him down before he starts to get needy."

Even though they were considerably happier the past few weeks, Hailey and Jay tried to behave as normally as possible both at work and when in public. They were hands off at work, even when they were alone and sure no one was looking. Neither of them liked lying to their friends, but neither of them wanted to leave the bubble they were living in either. They wanted to stay here as long as they could but could not hide the truth from Will or Vanessa.

"I'll be in around 9. Voight said the FBI has requested our assistance with a case, he wants me there when the agent arrives." Jay said as he pulled away from Hailey.

"He say why?" Hailey's interest was piqued. While they worked often with feds from different agencies, it was not always smooth sailing when they were asked to assist.

"Just that I needed to be there at 9 to meet the agent." Jay said as he kissed Hailey goodbye.

"I'll bring you some coffee and a muffin from the bakery. I love you."

"Bye. I love you too."

OA found himself at the 21st district just before 9 am. When he found out the Latin Kings were making big moves in New York City to set up a pipeline with the cartel, he knew exactly where to go to get more information.

It was not hard to get the bureau to agree to bring in the Intelligence unit out of Chicago to help. Agent Castille had been impressed with Detective Upton during her time in New York. Her knowledge of major players in the gang proved to be valuable on a case they had worked. Since she had maintained contact with Sgt. Voight during the time his detective was working under her, it was an easy call for Agent Castille to make. She was prepared to plead her case to send an agent down to work with intelligence, but she was pleasantly surprised when the Sgt agreed right away.

OA thought about telling Hailey he was coming, but he also thought it would be fun to surprise her. They had bonded during their partnership and he had learned a lot about the Intelligence Unit and how Chicago operates. He was excited to run around Hailey's home turf and play tourist for a change, but was a little nervous to meet everyone.

As he walked up the steps of the building, he took a deep breath in and prepared himself to meet the team.

Since Voight had left instructions for him to see Sgt. Platt, he figured that he should get off on the right foot and do as he was told. The way Hailey had described Trudy Platt did not match what OA was seeing. He pictured someone much older, and much scarier looking. What he found was someone who could pass for Hailey in 15-20 years, give or take; he knew better than to try to guess a woman's age. He cautiously approached the desk sergeant as she was flipping through a magazine.

"Excuse ma'am. I was wondering if you could help me?"

Without even looking up from her magazine, Trudy responded to the unfamiliar voice.

"This is a police station sir, not a help desk. I suggest…"

Just then Trudy looked up to see the man in front of her. He was tall. Very tall. Dressed in a really nice suit and flashing a smile that completely caught her off guard. She instantly took off her glasses and ran a hand through her hair while standing up straight.

"I'm sorry, what did you say you needed?" Trudy said softly after she cleared her throat.

"I was hoping you could help me. I am looking for Trudy Platt. I was told to ask for her."

"Well, you sir have found her. And what is it that a nice suit like yourself might be needing help with?" The blush that washed over OA's face was one that Trudy would not forget.

"I am looking for Detective Upton. I was told you could help me find her."

"Ah. And what did goldilocks do to earn a visit from you?"

"I'm her partner. From New York." OA said as he reached out to shake Trudy's hand. Trudy's eye went wide when she heard the man refer to himself as Hailey's partner. And when she saw Jay walk through the district doors, she knew that the universe was on her side.

"Hey! Tall, dark and brooding. Tall, dark and handsome here is looking for Upton." Trudy yelled out at the unsuspecting detective. Jay stopped in his tracks and turned to look at the man. Tall. Definitely handsome. Definitely in a nice suit. FBI.

"Agent OA Zidan. Unless you're good with calling me Agent Handsome, I don't mind either. I'm Hailey's partner from New York." Jay's eyebrow shot up at the mention of Hailey's partner. Although a photo of the agent had caused an ruckus in the bullpen the previous month, Jay could never bring himself to actually look at the picture of Hailey with her temporary partner.

"Hear that Halstead? He's Hailey's "New York partner"." Trudy said with a devilish grin on her face. She knew how the two detectives felt about each other and she was 100% positive that since her return they had struck up a romance. But they were keeping it quiet and playing it cool at the district. So, when the opportunity to poke a little at Jay came along, she couldn't pass it up.

"Halstead? Jay?" OA asked.

"Yes, but I've also been known to answer to Detective Brooding. Your choice." He said as he extended a hand out to shake.

"I've heard a lot about you. Hailey never stopped talking about you." Jay blushed to hear this.

"Well Agent Zidan, I'm sure Halstead can get you to Hailey safely, but if you need help with anything, anything at all, you come find me." Jay looked quizzically at Trudy. He had never seen her flirt with anyone, much less an FBI agent.

"You ok Trudy? You seem a little, off. A little red in the cheeks." Jay asked while motioning his finger around his cheek. The daggers that she shot back at him made his day.

"I'm fine Chuckles. Voight is on his way in. Better get up there before he gets here." Trudy directed.

OA followed Jay up the stairs as they made brief small talk about his flight and how long he had been in Chicago. As they came to the top of the stairs, OA took in the bullpen. It was as Hailey had described it. The only sign of technology in the place was the computers on the desks. Everything else about the room looked like a late 1990s police station. As Jay began to call attention to the team, OA spotted a familiar face.

"Hey, hey, Chicago!" He said, arms open wide while walking towards Hailey. The nickname earned a double take from Jay.

"OA! What are you doing here! Why didn't you call?" Hailey exclaimed as she….skipped? Trotted? Bounded? Jay was not sure what Hailey was doing, but it was something he had not expected to see. He also hadn't expected to see Hailey on her tippy toes reaching around OA for a hug.

"I thought it would be a fun surprise. I was going to call when I got to the district, but I had to meet your desk sergeant. She did not disappoint." OA said as he released Hailey from his arms.

"You weren't kidding about the whiteboard." OA stated as he pointed at the board. Hailey laughed out loud as she remembered the FBI team's faces when she told them about how Intelligence taped their info onto a whiteboard. As she looked around the bullpen, however, she was met was curious faces.

"Sorry guys. This is OA Zidan. My partner from New York." Jay noted Hailey's use of the word partner. He leaned back against a desk; arms crossed in front of his chest as he watched the rest of the team fall over themselves to meet the agent.

Vanessa and Kim (wait, did their hair look like that a few minutes ago?) eagerly approached OA with outstretched hands to introduce themselves.

"Vanessa." She said as she stuck out one hand to shake OA's and set her other hand on her hip. She did a soft head tilt and shot a thousand-watt smile at OA.

"The roommate" OA stated while making the connection to the name. Vanessa, wide eyed over the fact that OA had heard of her, nodded as she fought back a giggle. "That makes you Kim?" Kim smiled widely as she approached OA to shake his hand. "I heard you are going to be taking the detectives exam soon." OA recounted. Adam watched with raised eyebrows as Kim attempted to string a sentence together to answer OA.

The men of Intelligence shot each other looks, each one feeling a little more insecure than they had when they walked into the district that morning. Vanessa and Kim were already smitten with OA. He paid enough attention to Hailey to be able to figure out who was who on the team and the way he filled out his suit didn't hurt either.

Hailey looked over at Jay with a "are they serious?" look on their face. Jay nodded with a chuckle remember the day that Vanessa showed them all a picture of OA.

As Adam and Kevin introduced themselves, the team recognized the buzzing of the gate. They all looked to the stairs to see Hank coming up holding a file in his hand.

"Hey Sarge. This is….."

"Agent Zidan." Hank interrupted Hailey as he approached the agent. He reached out a hand to offer a firm handshake to the young agent. "Agent Castillo filled me in. Why don't we step inside my office? Upton, join us." Hank said as he marched straight into his office.

OA leaned over and whispered into Hailey's ear. No one could hear what he said but whatever it was had earned him a pointed look from Hailey. He reached his arm out in front of him to indicate that he would follow Hailey. As she passed in front of him, Jay noticed that OA placed a hand on her back as if to guide her. It did not go unnoticed by the rest of the team.

"So, they also talk with their eyes." Kim deadpanned to Kevin.

"Apparently, he talks with his hands too." Kevin muttered under his breath.

"Good luck brother." Adam said as he reached out to give Jay a pat on the back when he walked by, happy that OA was Jay's competition and not his. Jay laughed at the whole exchange that had just taken place. While he understood why the team might suspect a little bit of jealousy on his part, he knew that they were missing a crucial piece of information that he had.

He and Hailey were happily in love and no one was coming between that.

….

….

….

But maybe it wouldn't hurt to have a talk with OA, just to be sure they were on the same page.

I hope you enjoyed! Like I said previously, I had 2 very different ideas about jealous Jay fics, angsty vs funny, and I wanted to put them both out there. Thanks for reading! And as always, thanks to the Upstead group chat on tumblr for the support and being a sounding board for me to bounce ideas off of!