Erin left Hank's office and looked around the bullpen. Something was different in this room, but she couldn't quite put her finger on it. Almost like the air was too heavy to breathe. She could see the group's faces, a mixture of shock and wonder. They all wanted to know why she was back but more importantly, they wanted to know why Jay had taken off instead of waiting to talk to her.

Erin settled on Ruzek. If anyone would give her the straight scoop, it would be him. She walked over to his desk.

"Hey Ruzek."

"Nice to have you back in Chicago," Adam said as he hugged her. Erin hugged him back and smiled.

"It's nice to be home. I missed everyone."

"We all missed you too. It hasn't been the same since you've gone."

"Hey, wanna get some coffee? My treat," Erin said with a smile.

"Sure," Adam said as he headed for the breakroom.

"Let's go to Watson's," Erin said and began to lead Adam down the stairs.

About 10 minutes later, Erin and Adam were sitting at a table in Watson's café. She didn't waste any time with her questions.

"I need some info Ruzek."

"On Halstead?"

"Yeah."

"What about him?"

"How has he been since I left?"

"He was crushed, Lindsay. He loved you and you just bailed."

"I know and it's not like I wanted things to go down that way. I loved him too, you know."

"I know. I really thought you guys were going to be the ones to make it, you know. Kim and I never made it to the altar but I thought if any couple from CPD would stay together, it would be you and Halstead. You guys always made things look so easy."

"It was sometimes easy to forget that Jay and I were dating. Maintaining that professional relationship was what we had to do. But I did love him, Ruzek."

"I know."

"So I gotta know."

"What?"

"Has he been with anyone since I left?"

Adam sighed. He didn't want to hurt Erin, but she did ask.

"Ruzek?"

"There was someone. It didn't last long."

"Who was it?"

"That's not important. It wasn't serious or nothing. I think he just needed a distraction."

"Distraction is what gets us killed in this line of work."

"Halstead knows what he's doing."

"Is he still seeing her?"

"No."

"Who was it Ruzek?"

"It's not important. I gotta get back to the district. You coming with?"

"Yeah." Erin gave in, knowing that Adam wouldn't give in. Maybe someone else knew something back at the district.

Arriving back at the Intelligence office, Erin didn't know where to sit so she settled on Jay's chair. He still hadn't come back and it kind of worried her. But then Hailey went over to her.

"Hey, Erin."

"Hey."

"It's nice to see you back here. The unit sure has missed you."

"I'm sure they have."

"I know it probably doesn't mean much, but I've done my best to fill your shoes."

Something clicked inside Erin and she suddenly filled with rage. Had it been Hailey that Jay was with?

"Oh I'm sure you've tried," Erin said coldly.

"Jay's been a great partner though. Really helped me learn the way around here."

"Oh yeah, Jay is a great partner."

"He is."

"Yeah and I'm sure you've been quite the eager student."

"Excuse me?"

"Oh Jay is real good about showing all his partners a real good time. I should know."

"I think we've gotten off on the wrong foot Erin…" Hailey started but Erin cut her off.

"I think I know all I need too. I shouldn't have come back. I'm out of here," Erin said as she stood. She started out of the bullpen but stopped at Antonio's desk.

"Can you tell Hank I went to the house?"

"Sure thing," Antonio said and Erin didn't look back as she walked away. Hailey just stood, shell shocked.

20 minutes later, Jay walked back into the bullpen. He had gone to the gym to get in a quick workout, something that always cleared his mind. He looked around for the familiar brunette but didn't see her. Instead, he saw Hailey heading his way.

"Where the hell have you been?"

"The gym, did we get a case?"

"No."

"Then what's wrong?"

"Jay, I have been known to put up with a lot of things in my life but I don't deal with pissed off ex-girlfriends. I just don't."

"What are you talking about?"

"Erin seems to think we've been sleeping together. You need to set that straight with her. I don't do pissed off ex-girlfriends."

"Why the hell would she think that? What did you say to her?"

"Nothing."

"Hailey, what did you say?"

"All I said was that the team missed her, I was doing my best to fill her shoes and you've been a great teacher and partner. That's it."

"That wouldn't have led to the conclusion we were sleeping together."

"I never said anything like that to her. I don't know where she got it from."

"I'll deal with this. Do you know what hotel she's staying at?"

"I don't but Antonio might."

Jay walked over to Antonio's desk.

"Where's Erin?"

"She said to tell Voight that she was waiting at the house for him. Oh, and I wouldn't want to be in your shoes when you go over there. Erin was pretty pissed when she left. Hell hath no fury like a woman scorned."

"I didn't scorn her!"

"Dude, we all know that but she doesn't."

"Tony, come on. You know me man. I would never hurt her intentionally. Did she say anything else?"

"Nope. "

"Okay, I'm taking care of this now."