When Casey woke up the next morning, it took a while for him to remember the phone call from the night before. It certainly wasn't the first time somebody had called him and not said anything, but Kelly usually wasn't one of them. It was early, but Kelly should be awake, and though it was probably nothing, Casey wanted to get it cleared up and find out why he called last night. The phone rang, and rang, and rang, and an automatic voice came on telling him the phone's voicemail was either full or not turned on. Damn it.

He could've waited until later to talk to Severide, but instead he decided to head on over and see what was going on. He got in his truck and drove over to Kelly's apartment, by the time he got there the sun was up in full force and everybody around the block was leaving for work or school. Casey walked up the steps and knocked on the door and waited.

And was met with a familiar sight of Cathy Woods answering the door in nothing but one of Kelly's button-up shirts, though it didn't escape Casey's attention, though he was definitely not trying to stare, that two of the buttons were open on it, one on top, and one on the bottom.

"Hey Matt," she said in a tone that was just a little too friendly for his liking.

"Hi," he said, dumbstruck for a moment what else to say, finally he settled for the question, "Where's Kelly?"

"He's still asleep," the blonde woman answered, "can I help you with something?"

"I need to talk to him," Casey said, "can you get him, please?"

"You could tell me what it is and I can give him the message when he gets up," she replied.

The first thought going through Casey's head was that Kelly must've drank more than usual for him last night and probably had a raging hangover today, in which case he was sorely tempted to scream at the top of his lungs throughout the whole apartment just to be annoying. But he decided against it, and decided it was better to remain civil and polite, both Kelly, and his latest fling.

"Thanks but no thanks, I'll just talk to him later," Matt said as he turned to leave.

"Hey Casey!"

Matt turned back, so did Cathy, and he saw Kelly coming out of the bedroom half dressed.

"What's up?" he asked.

Casey was going to ask Kelly to see him outside again since he didn't want to intrude, but he could see that quickly getting old, so, not really sure what to do, he tested the waters, "Can I come in?"

"Sure, what's going on?" Kelly asked.

"Uh..." Casey moved past Cathy and looked back and forth at the two of them and asked, "I'm not interrupting anything, am I?"

"Nah," Kelly shook his head, "Coffee's on, you want some?"

"Sure, I could use a cup," Casey said, and followed Kelly into the kitchen.

"So what brings you over so early?" Kelly asked as he got two mugs down from the cupboard.

"Did you need something last night?" Casey asked.

Kelly turned around. "Huh?"

"When you called, did you need something?" Matt asked.

Kelly squinted one eye and said, "I don't know what you're talking about."

"You called me last night, quarter to midnight."

"I did not," Kelly replied.

"Well you didn't talk, but you called me."

"Nuh uh."

"I can prove it," Casey took out his phone and pulled up the last calls he got. "See?"

Kelly took the phone from him and held the screen two inches from his face. "Huh...I didn't call you."

"Maybe you didn't, but your phone did," Matt told him.

"Sorry," Kelly shrugged as he handed it back.

"Oh well, no problem," Casey said, "just as long as everything's alright."

"Yeah, everything's fine," Kelly answered as he sipped his coffee. "You eaten yet?"

Casey shook his head over a mouthful of hot coffee.

"Why don't you stay for breakfast? I'll have it ready in 20 minutes."

"Oh, thanks for the offer," Casey glanced towards the living room and saw Cathy standing with her feet shoulder width apart and her arms folded across her chest and was tapping her fingers impatiently against her bicep. He took the hint that his presence wasn't wanted and told Kelly, "But I can't really stay. I just wanted to make sure nothing was wrong."

"Suit yourself," Kelly replied as he took a carton of eggs and a pound of bacon out of the fridge.

"Call me later when it's a good time?" Casey offered.

Kelly turned towards him, one eyebrow arched in confusion. "Any time's fine."

Casey nodded, going along with it, "Sure, Kelly...see ya."

He left the kitchen and was met with an obstacle barring him from the front door, the obstacle in question being Cathy Woods, who still had her feet planted firmly and her arms crossed.

"Excuse me," he said as he moved to step beside her.

He got out the door and just started down the steps when he heard her voice behind him, he turned and saw her standing at the top of the stairs, calling down in what other people might interpret as a friendly tone, "Don't be a stranger, Matt, drop in any time."

To somebody else it might've been a friendly greeting, but Casey could sense the passive aggressive resentment clouded under it. He looked at her for a second, then turned and headed to his truck. It was too early in the morning for this and Casey wasn't going to get into it with Severide's...whatever she was. Honestly he was surprised that she was still there, he would've figured she'd be lone gone by the time the sun came up. Instead she was right there acting put out by his appearance on Severide's doorstep. He didn't know what she had to be mad about, it wasn't his fault that he hadn't been able to get Kelly on the phone. But, it was over, he left, and now the two of them could go back to...he didn't even want to think about that one.

During the next shift, everybody had just gotten back from a structure fire and everybody had had to toss their stuff in the wash and hit the showers. Casey had just finished getting dressed when he heard a phone bleep with an incoming text message. He realized it was Severide's, who was still in the shower. He knew it would wait, but curiosity got the better of him and he picked the phone up off the bench to see who had sent what to him.

"Whoa," he said as his eyes bugged out.

"What is it?" Kelly pulled the shower curtain back enough to see what he was doing.

Casey stood there staring at the phone for a few seconds before he finally responded, "Remember that picture you got the other day?"

"Yeah?"

"Well here's another one, leaving much less to the imagination," Casey said, feeling a perverse smirk on his face and a slight heat rising in his cheeks.

"Give me that," Kelly stuck his arm out through the gap in the shower curtain.

Casey took it over and handed it to Kelly, who glimpsed at it and reacted with a similar, "Whoa."

Casey was struggling to maintain a straight face as he asked, "Is that Cathy again?"

"Yup."

Casey pressed his hand against his face, just about to lose it, unable to keep his voice from cracking in parts as he said, "Well that's one hell of a way to say 'goodbye', isn't it?"

Kelly handed his phone back to Casey and at the same time lightly shoved him back to shut him up.

"So what happened?" Matt asked as he set the phone down, "You change your mind or something?"

"None of your business," Kelly called to him.

"Just let me know, is she going to answer the door in her underwear every time I come over?" Casey asked. "Not that I'm complaining, she's hot, but...it's a little weird."

"Yeah well, as long as she doesn't care, neither do I," Kelly said as he shut off the water and reached for a towel, "I mean we're all adults, we don't have any secrets."

"We sure won't for long at this rate," Casey replied teasingly. Then he thought of something else, "Sure hope Benny doesn't decide to just drop in without warning, not that I think he'd complain either...oh, what about your mom, though? That could be a problem."

"It's not that serious," Kelly said as he stepped out of the stall.

"That's what you said two days ago, she's still here," Casey pointed out.

"Yeah, well..." Kelly shrugged, "some hookups last longer than others."

"Apparently," Casey said, "Most of them would've already been gone before I came over the first day."

When Kelly didn't respond, Casey looked over and he saw Severide all but staring off into space with a small smile on his face, one that Casey hadn't seen for a long time, though he couldn't recall offhand when the last time was.

"I really like her, Casey," he said. "I think this can actually be a thing."

Casey was taken aback by this but slowly nodded to show his support. "Well that's great, Kelly..."

He should've said more, he wanted to, about how Kelly deserved to be happy with someone again, but honestly he felt too embarrassed to say it. It especially was not a conversation he wanted to have if someone else walked into the room at any moment. And it honestly wasn't a conversation he felt he could have given his limited experience with Cathy Woods already left him with the distinct impression he didn't like her. And he couldn't figure out what Kelly saw in her. Clearly it was something Matt couldn't see, but Kelly did seem to be happy about this newfound relationship. So for now he just left it where it was and didn't say anymore.