An: wow I'm sorry this took so long I've had a lot of shit going on and really haven't been in a head space to write. I've finally got into it again and this is the final instalment of this story! I also got a review asking why I gave them chips with a Chinese... ok so I'm English and it physically pains me to say fries (unless I'm having actual fries like the ones you get at mcdonalds) so I say chips lol sorry for any confusion. Plus I just wrote out my usual Chinese order and didn't even think anything of it until someone pointed it out haha.

"I'm telling you, they're definitely together! Mouse pinged his phone yesterday and it was at Erin's! They've been lying to us! I even saw men's toiletries in her bathroom... and an Army hoodie on the floor of her bedroom!" Adam exclaimed.

"Hold on... why were you in Erin's bathroom?" Antonio asked.

"Someone was in the guest bathroom and with the amount I drank, and with breaking the seal pretty early on in the night, I needed to go! I was desperate!" He replied, "Come on guys, what do you think?"

Adam, Kevin, Kim, Antonio, Mouse and Nadia were all in the locker room discussing their theories on Halstead and Lindsay.

"Honestly guys, even if they are together, what's it any of our business? It's not like we are going to go up to them and ask them," Nadia said, feeling bad for Halstead and Erin. It really wasn't any of their business. She of course knew about their relationship but had been trying hard to keep it a secret.

"Okay I get that but they're lying to us!" Adam exclaimed.

"Why do you even care so much, bro?" Kev asked.

"Well, I just hate that they feel they have to lie to us. We are supposed to be their friends," he sighs.

"Yeah we may be friends with them, but after the way Voight treated Jay when he thought there could be something going on..." Mouse explained, "He threatened to kick one of them out the unit."

"Yeah, and to be honest this is really none of our business. I suggest we all keep our mouths shut and let it be," Antonio said.

Before anyone could reply, the locker room door opened and Jay and Erin walked in, laughing, "Hey guys, what are you all doing in here?" Erin asked as she opened her locker to put her stuff into it.

"Complaining. Well, these guys are. They were all so hungover yesterday and I was fresh as a daisy. The joys of not being as old as you all," Nadia laughed.

"Hey! We aren't old. Besides, you didn't drink half as much as us seeing as you can't get served at Molly's," Adam exclaimed.

Nadia rolled her eyes, "Downside of being friends with a load of cops and hanging out in the cop and firefighter bar is that I cant get served. Anyway, I pre-drank back at my place with my room mate. I ensured I was drunk enough to get through our time at Molly's without sobering up too much but not too drunk that I'd end up getting kicked out. Then I seem to recall me and you going head to head on the shots when we got back to Erin's, so please, don't use the whole me being underage excuse."

"She's got you there, Adam," Erin laughed, "I genuinely can't believe how much we put away. Hank came over yesterday morning and gave me a bottle of scotch and I couldn't even look at it without feeling sick. He said he hasn't seen me that hungover since I was 17. Honestly, never felt as rough as I did yesterday."

"Wow you must've been bad then... Wait, why did Hank come over?" Adam asked.

Erin rolled her eyes, "To see me and say happy birthday... he's basically my dad Adam."

"I literally slept most of the day yesterday trying to stop the hangover from killing me," Jay said as he put his stuff in his locker, "Think I was still drunk when I first woke up. I made a greasy breakfast and then fell back asleep until I went over to Erin's."

"Ouch… I thankfully wasn't too bad seeing as I left after Molly's. What time did you actually get back then, Jay?" Antonio asked.

"After Adam and Kim left, we finished off the rest of the whiskey… I think I left around 6? I honestly can't remember," Jay laughed, "Just glad we all lived to see another day."

Everyone laughed, "Oh shit. I'm late. I best go report to Platt otherwise I'm going to spend the rest of the week writing parking tickets!" Kim exclaimed as she ran out the locker room.

"Come on guys, we best be going up and let these two finish getting sorted," Antonio said, nodding to Adam, Kev, Nadia and Mouse who all followed behind him.

"Well that was..." Jag begun as he started lacing up his boots.

"Weird!" Erin finished, "You don't think that they suspect anything, do you?"

"No, why would they?" he asked.

Erin sighed, "I don't know, when have they all ever been here early, and at the same time?"

"Never…" Jay groaned, "There is no way that they know."

"Something just seems… off? I don't know. Ugh, come on. We don't want to be late and have Hank question us. I know he knows and everything but we can't let there be any difference in how we are at work," She told him as she shut her locker.

Jay nodded in agreement and shut his locker and followed her out of the locker room. They made their way up to the bullpen and immediately entered the break room to make some coffee.

"What do you want to do tonight?" Jay asked as he grabbed two mugs.

"I was kind of hoping we could just stay in, go back to yours? We've eaten out for four nights running and I'm really craving your chicken stir fry," She replied, filling up both of their mugs.

Jay laughed, "I was actually thinking the same, home made food sounds good."

"It should be a relatively quick day seeing as we will probably just have a paperwork catch-up day," she replied as she turned to face him, "Thank you for such a nice weekend, I've loved it. Yesterday was perfect."

He smiled and discretely reached out and held her hand, "No problem. I loved it. I'm glad you enjoyed your birthday. Now come on, the quicker we get to work, the quicker we can get out of here!"

She squeezed his hand one last time and turned to walk out the break room.

Hank walked up the stairs and walked into the bullpen, "Okay guys. Paperwork day, we've got behind and I'm being hounded by the guys upstairs. We need to get it done. So get it done. Halstead, my office."

Jay looks up from his computer and see's everyone looking up at him, "Dude, what'd you do now?" Adam asked.

Jay just shrugged as he got up and followed Hank into his office, closing the door behind him.

"Take a seat, Halstead," Hank says, pointing to the chair, "Don't worry. I'm not going to fire you or go off on you. I just want to talk."

"Look, Sarg, I'm sorry we weren't up front with you. I wanted to tell you but she was scared and I didn't want to lose her. Thank you for not going off on me yesterday," He said.

Hank smirked, remembering exactly what he had said yesterday, "It's fine, Jay. I get it. Truth be told, I have never seen her this happy. I knew she had been seeing someone but she's always been a private person when it comes to relationships. You make her happy, Jay and I'm not going to put a stop to it. Just don't let anything from your home life effect your work."

"Thank you, sir. We won't," Jay replied.

"You best get out of here, everyone is trying ever so subtly to spy on this conversation," Hank laughed as Jay began getting up and walking to the door, "Oh and Halstead?"

Jay turned around, "Yes sir?"

"You hurt her and I will kill you," he threatened, giving him a pointed look.

"Don't worry about it sir, if I ever hurt her I'll happily take whatever you give," Jay replied.

Hank laughed, "Good, good. Glad we are on the same page Halstead."

Jay laughed as he opened the door. As he entered the bullpen everyone quickly looked up from their desks as they heard the laughter coming from Hank's office.

"What was that all about?" Adam asked, as Jay sat back at his desk.

"None of your damn business, Ruzek. Now get back to work!" Hank barked from his office, making Adam jump and put his head down. Everyone laughed at how jumpy he was when Hank spoke to him.

It was early afternoon and everyone was officially bored, paperwork was still being done and it was taking forever. Jay looked up and saw Erin catch his eye, she nodded to follow her into the break room. He glanced around and saw that everyone was busy with their paperwork, so grabbed his mug and followed her in.

"What's up?" He asked, watching her prepare the coffee.

"They all know," She replied.

"Wait, what? Did Nadia say something to you on the lunch run?" He asked.

She sighed and turned to face him, checking to see if anyone was looking, which thankfully they weren't, "She told me that everyone knows about us. She said she's known for like 4 months, but she didn't want to say anything to us. She said she caught you leaving one morning before she moved out but didn't make herself known. She told me she understood why we hid it and haven't been telling anyone but they have all been thinking it for a couple of months now."

"Wow… So do they definitely know? Or still just suspect?" he wondered.

"Well, they definitely know," She replied, pouring the now finished coffee into their mugs, "Apparently, when we didn't answer our phones, Adam begged Mouse to ping your phone and it was still at mine, obviously. Which wouldn't have been too bad, but…"

"…but I pretended I was texting them from home… Oh fuck…" Jay groaned, grabbing the milk out of the fridge.

"Bingo. From the way Nads was talking, it sounds as if Adam is hurt we didn't tell them. Mouse, Nadia and Antonio all backed us up saying that we obviously have our reasons and that it's none of their business," She replied, finishing up making her coffee, adding the milk and sugar.

"It really is no one else's business… What are we going to do? Just tell them? Or ignore it?" He asked.

"I reckon we have a little fun with it," She responded, looking sheepishly, "When the inevitable Molly's invite comes tonight from Adam, you say yes and I won't reply. Someone will ask me if I'm in and I'll say no because I have a date."

He grinned, "That is perfect, I like that idea. I can't wait to see their face."

"Right come on, we've been in here long enough. We better leave before they start getting suspicious," She laughed, grabbing her mug and walking out the break room, with him following her.

Thankfully everyone was so wrapped up in their own work, that no one noticed that they'd been in the break room talking for a while the second time today.

Jay walked down into the Mouse hole, where Mouse had been doing some work he wasn't able to do from upstairs, "Hey man, can I talk to you for a sec?" he asked, sitting down next to him, watching his fingers flying across the keyboard.

"Yeah sure, what's up?" Mouse replied, turning to look at him.

"I know you know about me and Erin. I also know you pinged my phone yesterday," He told him.

Mouse sighed, "Look, I'm sorry man. I knew there was something going on between the two of you, you have been so happy lately. It's been nice. So when Adam started going on, I kept trying to ignore him or put him off the scent. As did Nadia, so I assume she knows too?" He asked, and Jay nodded, "But yesterday, you weren't answering your phone and considering the amount you drank, I was genuinely worried about you. So I pinged your phone and said that it was at Erin's. I did say that you could've left it there but…"

"… then we played it off like I was at home, making it very obvious that we were definitely together. Look man, I'm sorry we didn't tell you. We wanted to keep it on the DL because of Hank. But Hank kind of caught us yesterday," Jay explained and Mouse's eyes were wide, "Nothing like that! But I kind of answered the door, still drunk and half naked. I told him I'd slept on the couch but well… the couch was full of the takeaway cartons so he knew that wasn't true. I woke Erin up and told her the story. He just told her he didn't believe her and well, she told him everything. He was actually okay with it. I don't know exactly what she said, but whatever she did made him see that we are good together and that we aren't just messing around. I really love her."

"Wow… you love her?" he asked and Jay nodded, scratching the back of his neck, "Well, I am happy for you. God knows that you deserve this, after everything you've been through. So, when are you going to tell everyone?"

"We want to keep it quiet for a bit, so me and Erin are going to lie, say Erin has a date tonight and I'll say I'm going to Molly's. We kind of want to see if Adam catches himself out," Jay laughed, "I really am sorry for not telling you. You don't know how hard it has been for me, lying to you."

"Don't worry about it. I totally understand. Now you really should get back upstairs to work before Hank finds you gossiping with me about his daughter," Mouse laughed, "I'm going to be up soon, just got to finish this."

Jay laughed, "Alright man, see you later."

Jay started walking up the stairs and grabbed his phone:

J: Hey, just spoke to mouse. I apologised for not telling him, and said I wasn't mad about the phone tracking. He seems happy for us though :) Still wanting Jay's famous chicken stir-fry tonight ;)?x

E: Glad he seems happy. Of course! Ever since we talked about it, I've been dreaming of it ;)x

J: Here I thought you spend your days dreaming of me. I'm offended.x

E: Whatever, Halstead. Get your ass back up here before Hank finds you missing :P x

"Right everyone, you can all get off. See you all tomorrow," Hank says as he emerges from his office then goes back in and shuts the door.

"Yes! Early finish! I am in a very good mood, Molly's everyone? My round!" Adam exclaims as he shuts down his computer and sorts out his desk.

Kev, Antonio, Mouse, Nadia and Jay all say yes straight away, "What about you Linds, Al?" Adam asks.

"Nope, I should really get home early tonight, Lexi needs help with some school stuff," Al said, grabbing his jacket and leaving.

"Nah, sorry guys. Not tonight," Erin replies, as she also switches off her computer.

"Wow, Erin Lindsay turning down free booze?" Adam exclaimed, "There has to be a good reason for this. Otherwise, I'd insist we take you to med to get your head checked out."

She rolled her eyes and grabbed her jacket, "I have a date if you must know, not that it's any of your business…"

Everyone looks at her, shocked, "Wait, what?" Kev asked.

"I have a date. What's the big deal?" She replied.

"But we thought…" Adam begun.

"You thought what?" She asked, raising a brow at him.

"Nothing, he thought nothing," Antonio quickly said, trying to shut him up.

"O-kayyyy," Erin replied.

"We thought you were dating Halstead!" Adam exclaimed.

Jay looked at Erin then to Adam, "What? Why? and who is we?"

"Well, all of us… Okay, maybe not Al and definitely not Hank, but the rest of us did," Adam sighed, "It's just, you two seem to be really happy lately, and something has changed. Plus not to mention when we were back at Erin's apartment, I used her bathroom and saw men's toiletries in her shower and an Army hoodie on the bedroom floor…" He definitely didn't want to cop to having Mouse ping Jay's phone.

"Why were you in my bedroom, Adam?" Erin feigned annoyance.

"I needed the toilet! I was desperate!" He replied, looking at the others to try and get them to help him out, "Come on guys, we've all suspected it!"

"I'm not seeing Jay, Adam. You do know there is more than one person who has that kind of Army hoodie? I am seeing someone, yes. I didn't want to tell you all because well, you are all nosey as hell," Erin grumbled, shooting daggers at Adam, who's eyes went wide with disbelief, knowing full well she was seeing Halstead, but once again not wanting to rat Mouse out.

"Oh, right…" Adam replied, "Well, you could've just told us! We would've understood!"

Hank's office door opens, "What are you all still doing here? I would've thought you'd all be at Molly's by now," He said, zipping up his jacket.

"We were on our way but Lindsay is telling us about her date tonight," Adam told him, and everyone looked at him - why was he telling Hank this?

Hank smirked, "You tell them about the two of you now that I know?" He laughed, nodding to Halstead.

Everyone's eyes went wide, Hank knew!?

"Wait, so it is true?" Kevin spoke up when he realised no one else was.

"We hadn't told them Hank. We weren't planning on either," Erin grumbled, putting her face into her hands.

Hank laughed, "Sorry kid, see you tomorrow." Hank decided to leave before anything else was said. He really didn't fancy gossiping about his detectives, especially when one was basically his daughter.

"Guys, why didn't you just tell us?" Adam asked after Hank had left, "Hank knows? But you still weren't going to tell us?"

"It really is none of any of your business," Jay replied, "What we do in our own time, out of work is between us and no one else."

"Yeah, but seriously man, why not just tell us?" Kev asked.

Erin sighed, "We just wanted to keep it to ourselves. We didn't want you all making comments or judging. Plus, until yesterday we were keeping it on the DL because of Hank. However, he knows now so it really isn't that big of a deal. Yes we are together. We have been for six months."

"Wow. I need a drink. Come on, we really need to go to Molly's now. I think the round should be on Halstead and Lindsay because of all their lies," Adam laughed, turning to walk down the stairs.

"Actually, shouldn't the drinks be on you? I mean, you did get Mouse to illegally ping my phone yesterday?" Jay asked, looking at Adam.

"Okay, so. Funny story…" Adam began, unable to think of what to say, "Guys, a little help here?"

"Nope, you're in this on your own mate," Antonio laughed, patting him on his back. He turned to look at Lindsay and Halstead, "I get why you kept it secret. I really do. Right, are we going to Molly's or not? Ruzek is buying."

"Yeah, are you two actually coming? Seeing as the date Erin is talking about is non-existent," Adam asked.

"Nah, sorry. I forgot, I have a date too," Jay smirked, "We were never planning on coming out. We actually do have plans."

"Alright, see you tomorrow then," Antonio said, giving them a nod as he began to walk down the stairs. Nadia, Kev and Mouse all said their goodbyes too, leaving Adam, Erin and Jay in the bullpen.

"Look, I am sorry guys. I just felt shit that you were lying to us. I didn't really think about anything else. Also, don't be mad at Mouse. I've been bugging the shit out of him the past couple of months about this," Adam explained.

"Look, it's okay. All is forgiven. But you owe us both pints when we next come out to Molly's, deal?" Erin laughed.

Adam grinned, "Deal. Now you two love birds go and enjoy your night."

Erin shot Adam a look, "Now that is another reason why we didn't say anything."

Adam raised his hands in the air in surrender, "Sorry, sorry. I'm going. I'll see you both tomorrow." He said, and then whispered to himself, "Wow Kim is going to go mental when I tell her!"

"Bye, Adam," Erin and Jay both said at the same time as they watched him walk down the stairs.

Jay reached for Erin and pulled her close to him, "So." He said.

"So." She replied, wrapping her arms around his waist.

"They all know… and it was less painful than I imagined," He said, leaning in to kiss her.

"Yeah, it really was," She replied, meeting his lips.

A clearing of someone's throat broke them apart, they both turned to see Platt stood there, eyebrow raised, "Shouldn't you two find a room for that?" She asked.

Erin buried her head into Jay's chest, "Oh my god…"

Jay's mouth went dry, he scratched the back of his neck nervously, "Erm, we were just…"

"I can see what you were just doing Chuckles," Platt rolled her eyes, "I have eyes you know. I heard from a little bird called Dawson that this has been going on for what? Six months?" Jay nodded and Platt laughed, "I called it. Olinsky owes me $100."

Erin looked up in shock, "Wait, you knew? Dawson told you?"

"Dawson knew about the bet me and Olinsky had going on. Of course I know, I have eyes! You've been extra happy since you came back from the task force, and Chuckles here has been extra chuckly. You really aren't as secretive as you think," She replied, as she placed a folder on Nadia's desk - the only reason she had come up in the first place, "Good night, detectives." She said, turning around and walking back down the stairs.

Once she left, Jay and Erin looked at each other, "Come on, let's take the back exit and leave before we have any more awkward encounters with our colleagues," Erin said, nudging Jay to walk. It had definitely been an interesting day. They could only hope that now they no longer had to hide their relationship, that things would be easier for them. Maybe people knowing wasn't as bad as they thought it would be?

The end.

Another AN haha: I really struggled ending this. I haven't written in about 2 years nearly, maybe more? Idk. and finishing oneshots/fics has always been hard for me. I'm not overly impressed with this story but I think it has helped me get back into the swing of things. Now, I have a few one shot ideas that are quite sweet and a multi-fic about the team going to Wisconsin :) I am going to try and get a few chapters pre-written of that one first before I start posting, then I can do one shots in between and things. Hope you enjoyed it!