I am been reading a lot of Kelly and Casey fanfiction, and now I am kind of addicted. But because there is not many fanfictions, I am writing this. I might skip episodes, just a heads up.

Summary: Both Kelly Severide and Matthew Casey were exploring the idea of a relationship when their best friend, Andy Darden, passed away. Instead of embracing each other in the pain they both shared, they were at each other's throats.

Notes: Hallie Thomas is the step sister of Matthew Casey, no romance between the two. The first chapter kind of is fast with time, this first chapter will be all in Season One.

Hello = Quotes from the show.

I do not own Chicago Fire, PD, Justice, and Med or any of the characters. Pd, Justice and Med characters might be used in this story.

Endgame: Kelly and Casey

- Passionate -

Chief Wallace Boden slams the door to his office after walking inside. His eyes move to the two Lieutenants of his fire house. He was tired of the stress in the house, he missed the happy go house he was use to being in charge of. "This animosity, it's gotta stop. You're both supposed to be leaders here, you lead by example. We've all been through it. Andy was a friend to all of us."

Kelly Severide's eyes move to his old friend form, garling at the man. "Yeah he was."

"Is there something you want to say?" Matthew Casey growls at the man he once called his best friend. Though, he was struggling still with the loss of Andy and Kelly; he would refuse to show it.

The Chief quickly interrupts them before the conversation can go anywhere else. "See this? This right here. This is exactly what I'm talking about."

"You're right chief. I'm sorry, it's all good." All three of the men in the room could hear the humor in Severide's voice.

Casey moves his eyes angrily to Kelly then the chief. "We're fine, Chief."

"Then that's enough for now." Boden was not idiot.

He knew the two had a history that went beyond a friendship. He also knew the both of them still had anger towards each other, about their friendship, their relationship and the death of their friend. He knew when they did not have answers the best thing was to blame someone else. He feels for them, he really does but he has done the same thing when he first started as a firefighter.

His plan was to call Christopher Herrman inside his office and ask to keep an eye on the two when he wasn't around. He knew the both enjoyed the company of Herrman. He thought, even with Herrman on Truck, maybe Severide would open up to him.

The tension in the firehouse wasn't going away anytime soon.

- Passionate -

It was a month later when Hallie Thomas brings the topic up with her step brother. "So, you and Severide?" She doesn't have to look up knowing what look is on Mathew Casey's face. "Is it officially over?"

"I don't know what you mean." The anger is between his lips as he tries to hold it together.

Hallie rolls her eyes. "Yeah, you do. Do not act stupid. I know enough about you, and Severide that you two were almost a thing. The both of you didn't bring anyone home or talk about bringing anyone home for at least six months. I was there at the family dinners, I did listen."

"You don't care?" He asks softly.

"That you are bi?" He laughs. "Far from. Gay. Straight. Bi. Yellow. Blue. Glitterly. I love you anyways. So, come on tell me."

"We haven't really talked in a month. He growls at me, I shout back. That is about our relationship at the moment." He frowns, looking down to his shoes. "I gotta go. I'll be there for dinner on Sunday night. Love ya."

- Passionate -

The progress of Kelly and Matt's relationship from late fall of 2012 to the very first day of May 2013 is best described as a rollercoaster. They were okay together when the both of them were working at the firehouse. But as soon as they stepped out of the firehouse, it was ice cold again.

Kelly helped matt through the issues of Hank Voight, the rouged cop that put up a fight with matt because he did the right thing. Matt let him in what was going after he showed up to one of their calls, and Kelly stood up for when something always came up.

Until May first 2013.

It was the opening of the new bar, called Molly's, owned by three people in Firehouse 51. The bar was filled with happiness, drinks and laughter after a certain police officer stopped by to make amends.

It's been a rough year and this was much needed.

Matt downs a shot of gold 1800 Tequila, slamming down a hefty tip for his favorite bartenders, and grabbing his beer and leaving to the table in the back. He knows his sister is around somewhere, saying her hellos. Though he wasn't really in the mood after Voight left to be around people, he sat in the corner by himself. He nursed his beer, watching his friends.

He liked seeing his friends, his makeshift family happy.

"Do you not want to be apart of the fun?" He smiles at the voice, as it joins him at the table putting a brand new shot glass filled with a gold drink in front of him.

"I am apart of the fun over here, man. That shot for me?"

"Yeah." Kelly says to the stressed man. "Drink up. We need to talk?"

"We need to talk?" Matt says. He grabs the small glass, downing the drink in moments.

"And the tequila was a small gift so you would listen." He smiles. "I miss you, Matt. I miss us. I miss falling asleep next to you, I miss holding you."

Matt gives a soft smile. He was not expecting these words from the man tonight. Especially since the two have not really talked outside of work.

"I just wanted to tell you, I guess kind of confessed. I kinda fucked up with how I reacted to Andy's death. I know we kind of both blamed each other but I know I took it far, throwing the first punch."

He sighs, bringing his own beer to his lips and drinking half the beer in moments.

"I just want to say that, I love you. I have loved you since the first time we hung out after class during the academy. My love grew for you every time the both of us hung out. Andy knew. I think he knew I was going to confess it to you. I vaguely remembering confessing my feelings to him about you. So, I am putting it out there. I love you. I am head over heels for you. And if you are up to it, I want to spend my life with you."