Not really thrilled with how this came out, but I was rewatching some old episodes trying to survive this CPD drought and decided to write something.

I own nothing, enjoy!

xoxoxoxoxo

"Er?" Jay stood at his partner's desk in the now empty bullpen; everyone, even Voight, had filtered out in the past half hour as Erin sat at her desk, pretending to be engrossed in a case file but completely lost in her thoughts. "You good?"

Her partner's voice broke her from her trance and Erin's head shot up to meet his blue eyes that were clouded with concern. "Uh, yeah, sorry. Thought I had something here. Where is everyone?"

"They left. They said goodbye, but I'm guessing you didn't hear them?" Jay raised an eyebrow, the concerned look not leaving his face.

Erin shrugged. "Must've been too wrapped up in the case. You can go, I'll lock up." She closed the file on her desk and shut down her computer, standing up to get her keys from the locker room. She brushed past Jay and prayed he would leave without an interrogation, but he grabbed her arm before she could get by.

"What's wrong?"

"Nothing, I told you I'm fine," she said defensively, pulling her arm away and continuing on her way to the locker room. Jay sighed, unsure of whether or not to follow her. She had been acting weird all day and he was positive it wasn't because of the case, but he also knew if he pushed her any more she would completely shut down. He settled on leaving her alone in the locker room but decided he'd walk her out to her car – even if she wouldn't tell him what was bothering her, he had to make sure she was okay.

He heard the locker room door slam and Erin reappeared in front of him. "I told you to leave, you didn't have to wait for me," she tried to sound annoyed but was secretly thankful he cared enough to wait around.

"I still worry about you even when you don't tell me what I'm worrying about, Lindsay. I could hear you thinking all day," Jay told her as they walked down the bullpen steps and into the cold Chicago night.

"I'm fine-" Before Erin could once again finish her lie, her cellphone began to ring in her back pocket. She grabbed it and groaned when she saw the caller ID, quickly rejecting the call.

"Who was that?"

"Why do you ask so many damn questions, Halstead? I'll see you tomorrow," she snapped before storming off to her car and driving away, leaving Jay shaking his head in the parking lot.

xoxoxoxoxoxoxoxo

As she got in her car, Erin cursed herself for taking her anger and confusion out on Jay. It wasn't his fault that Bunny was once again trying to work her way back into Erin's life and it certainly wasn't his fault that Erin didn't know how to talk about it. She quickly drove to her apartment and made her way inside, thankful for the quiet. She changed into sweatpants, grabbed a beer from her fridge, and settled onto her couch, excited to mindlessly watch a movie to shut off her brain.

She flipped channels and finally landed on The Hangover; the thought of watching anything relatively romantic at the moment made her sick. She couldn't believe Bunny was getting married again. At this point, Erin had lost count of her mother's husbands and she hadn't even been invited to all of the weddings. She once again tried to focus on the comedy on her TV screen but failed miserably, eventually picking up her phone and reading through all of the text message invitations Bunny had sent her that week.

A knock on her door broke Erin from her thoughts and she rolled her eyes. No one in their right mind would come knocking on her door at almost 10 at night – so it was probably a drunk Bunny coming to ask Erin why she wasn't answering her messages. She considered ignoring it but the knocking just grew harder.

"I'm coming!" she yelled angrily, whipping the door open, "I already told you-" she began, but when she looked up it wasn't Bunny standing in front of her, but rather her partner.

"Peace offering?" he held up a bag of Chinese takeout and a six-pack of her favorite beer and Erin felt every ounce of annoyance melt away.

"Sorry," she said sheepishly, stepping aside to let him into her apartment. Even in baggy sweatpants and a t-shirt with her hair up in a bun, Jay couldn't help but realize how damn beautiful she was.

Jay decided to not ask who she'd thought he was in order to avoid her snapping at him as she had an hour ago. As much as he wanted to know what her problem was, his priority tonight was just to make sure that she was okay.

They silently made their way around her kitchen, fixing their plates before making their way back out to Erin's living room. Jay sat down first and Erin lay across the couch, her cold feet on his lap; their usual position during movie nights. The movie was still on and they both focused their attention on it, neither of them having said a word. Despite Erin's outburst and attitude, it wasn't an awkward silence – that's what Erin loved about Jay (other than his piercing blue eyes, goofy smile, and ridiculously hot body). He always knew when she needed him, even if she couldn't quite admit it herself and he never let her push him away.

As the ending credits began to roll, Erin finally spoke up. "My mom's getting married again," she said quietly.

Surprised, Jay turned towards her, the events of the day suddenly making sense.

"She wants me to come to the wedding. I don't think she told her fiancé she hasn't seen me in five years," she continued, tears welling in her eyes due to frustration. "And I feel so stupid for wanting to go, because I think she's changed. But deep down I know that they'll be divorced in six months and she'll forget I exist again,"

Jay lifted Erin's feet from his lap and put them on the floor so she was sitting up, then he pulled her into him. "You're not stupid, Er. You just want to believe that everyone has of as an amazing heart as you do,"

Erin lifted her head from his chest so she could look him in the eyes. "What should I do?" she asked him.

"I can't tell you that. No one is going to blame you if you don't go. No one is going to judge you if you do go. Do whatever will make you happy."

"Will you come with me?" she blurted out, before she even realized what she was asking. "Oh my God, I'm sorry, I didn't mean-"

Jay put his finger over his lip to get her to stop rambling. "If that makes it easier, of course I will. That's what partners are for, Er."

She laid her head back down on his chest as her mind cleared for the first time all day. "Thank you," she whispered into his shirt, and they both knew she meant for a lot more than agreeing to go to a wedding.