Author's notes: Hi all I'm back again with a new idea that popped in my head. This story will follow somewhat of the time line of the show now but will also have my own AU spin to it. Please leave me your reviews:-)

Jamie

Chapter 1: One night can change everything.

Matt Casey walked into Molly's on this freezing cold February night, with just a thin Hawaiian T-shirt under his blue winter coat. Tonight was Boden's dad's idea of a winter luau to bring close friends together, and who didn't enjoy a good party.

"Hey Lieutenant." Hermann spoke from behind the bar as Matt dropped his coat on the empty bar stool taking a seat." The usual?"

"Yeah, sounds good." Matt answers as Hermann nods before turning grabbing him a long neck." Actually." Matt stops him before removing the bottle cap." I'll take one of those fruity Hawaiian drinks with the umbrella in it." He points to the already made drinks sitting on the counter in coconut shaped mugs.

"You got it." Hermann places the beer back then sliding a mug towards Matt." That's my very own concoction." He nods at Matt grinning while he watches him sip from the straw.

"Who are you, and what have you done with Matt Casey?" Severide walks up slapping Matt's shoulder before taking a seat in the already crowded bar.

"Wow this is really good." Matt tells Hermann then turning to face Kelly as Hermann walks away smiling." What is that suppose to mean?" Matt let's out a chuckle as he rolls his eye's at his friend and room mate.

"Always so predictable Casey, trying something new." He shakes his head taking the tiny drink umbrella from the mug and throwing at Matt.

"Well maybe change is good." Matt shrugs his shoulders pulling the straw to his lips taking another sip of Hermann's concoction." Apparently the old Casey has no luck."

"Maybe your going about things all wrong?" Severide leans his arms on the bar turning his voice to a softer tone." Stop trying so hard."

"Really?" Matt chuckles shaking his head." Your going to give me relationship advice?"

"Come on Matt, every girl you've taken out on a date or tried to start a relationship with, since Hallie died." Severide turned quiet for a minute watching Matt's reaction.

Matt turned to his silent friend right away." It's fine I'm ok with her death." He pats Kelly's shoulder." It's been well over a year since she died and I'm more then ready to move on, but..."

"But." Kelly took over his sentence." You keep crashing and burning."

"Well if you put it like that." Matt chuckles but then turns more serious." But its not because of Hallie."

"Maybe you should be more like me?"

"Pffft." Matt shakes his head." Your motto, wham bam thank you ma'am. No thanks."

"Hey, just have fun don't try so hard to find ...the one." Kelly said as he air quotes his last two words." And hey that motto has worked just fine for me."

"Fun huh?" Matt takes another sip from his drink as his eye's scan the bar just then meeting a set of vibrant brown ones looking back in his direction from the other end of the bar." Maybe your right." He says to Kelly but his eye's stay locked with the dark haired girl holding his gaze as they both share a bashful smile.

"Hey." Kelly claps Matt's shoulder oblivious to his fixated stare on the young girl across the bar." I think you just don't pick the right girls." He tells him with a grin as Matt looks away for a brief second from beauty sipping at her own coconut mug umbrella drink." I think you should let me find you a girl for the night."

"Thanks roomie." Matt stands from his stool clapping Kelly's shoulder his eyes never leaving the brown ones watching his every movement." I think I got this though."

Kelly's eye's follow Matt's stare." Really?" He raises an eyebrow looking at the girl now." She's not what I would have picked for you." He chuckles.

"Precisely!"

But hey." He gets Matt to glance back at him as he moves around him grabbing to umbrella drinks." Just have fun."

"Have fun." Matt smirks." Got it." And with that he turns from his friend and starts towards the far end of the bar till he is standing in front of an empty stool next to the girl who's eyes are still locked on his." Hi." Matt says clearing his throat." Is this seat taken?"

"It is now." She smile up to him as her eyes glistened in the light as she pointed for him to take a seat.

They both sat quiet for a moment with their shy smiles before Matt cleared his throat and spoke breaking the ice." I'm Matt."

"Well Matt, is that other drink for me." The darkhaired girl spoke with a flirtatious grin pointing at the two drinks still in his hands as she reached for it

"Well that depends?" Matt teases as he pulls the mugs away from her reach.

"On what?" She tucks a piece of her hair behind her ear nervously as she felt her confidence fade.

"Fair is fair." Matt grinned." I gave you my name, now you give me yours, then yes this drink is your reward."

"Reward?" She chuckled as a red flush warmed her cheeks as he looked at her with his bright blue eyes." Fine." She whispers."It's Gabby."

"What's that." Matt places his fingers behind his ear in a teasing gesture." I couldn't hear you?"

"Oh your funny aren't you." Gabby reaches for the mug as Matt pulls it further away from her reach" Your just a tease." She smacks his arm giggling.

"Nope just having some fun." Matt finally hands the drink to Gabby.

"Oh yeah, me too." Gabby let's out a deep sigh before taking another sip of her drink.

"Well Gabby, no last name, you don't look like your having too much fun."

"Well Matt, no lastname, you don't either." Gabby then slurps the last of her drink." These are so good." She giggles a little tipsy.

"Ok then Gabby, how bout I get you another drink if you tell me why your not having a fun time?"

"But I am having fun now." Gabby looks up meeting Matt's stare. I tell you what you can get me another drink if you don't ask me about my bad day at work."

"Fair enough." Matt holds her gaze as the both smile before he turns away seeing ." Hey Hermann, can I get 2 more of your umbrella concoction?"

" Sure thing lieutenant." He brings over the 2 mugs winking at Gabby and sharing a quick smirk with his lieutenant before walking away.

"Lieutenant huh?" Gabby spoke quietly now.

"Yeah." Matt nods." About 5 years now."

"Hmm." Gabby responds as she takes another sip." Well it was nice to meet you, but I think I should be heading out now." Gabby stood grabbing her coat slipping it on.

"Really already?" Matt stood." Do you have a ride home?"

"Oh I walked." Gabby stopped for a minute looking up at Matt." It was nice to meet you and thanks for the drinks."

Matt watches as Gabby makes her way through the crowded bar." Damn it." He mutters before grabbing his coat and followed in the same direction." Gabby." He calls out just as he exits the front door." Let me give you a lift at least." He offers as she turns to face him.

"Really Matt its fine." She places her hand on his forearm, but quickly pulling it away, nervous of the instant connection she felt with him." I like to walk."

"Then I'll walk with you." Matt moves to her side as she starts to turn an walk away." You shouldn't be out late alone anyway."

"I'm a big girl, but suite yourself." Gabby shrugged but impressed by his gesture." So Lt Matt, do you hang out at molly's much?" She asked as they started down the street, just as the snow began to fall.

"Yeah, the owners are part of my crew." He says pulling his beenie out of his pocket putting it on his head, letting out huff before speaking again." I don't think I've ever seen you there before?"

Gabby chuckles." What's the matter can't take the cold?"

"Oh I can." Matt glances down at Gabby walking along side of him their arms brushing." But this is beyond cold." He whines now wrapping his arms around his body." And your making feel cold just looking at your outfit." He points at Gabby's high heeled scandals and her floral dress that fell to her knee under a thin black coat.

"Well I guess those few cocktails warmed my body." Gabby stopped in front of a set of steps up to an apartment door." Or maybe it was your company." She says with confidence that even surprised her when she saw the way Matt stopped walking and looked at her." Well lucky for you this is me." She points back at the door behind her while she takes a step back up onto the first step." If your still cold I can make you some hot chocolate?"

Matt moved closer to Gabby." Maybe later." He says his eyes fixiated on Gabby's before he crashes his lips to hers in an electrifying kiss. Minutes later they were frantically stumbling into Gabby's bedroom clothes being scattered along the way, before falling into her bed.

Matt rolled over the next morning stretching his arm out but feeling nothing but a cold empty spot next to him. He propped himself up onto his elbows scanning the room instantly finding Gabby sitting in the window seat in her robe across the room gazing outside, as she sips the hot liquid in her mug." Gabby?" Matt whispers drawing her attention to him, mesmerized by her beauty by the soft sunlight pouring in framing her face.

"Hey I didn't wake you did I?" She replies in the same whisper Matt used." I love watching the fresh snow fall." Gabby turns her head looking back out the window.

Matt sits up further in bed." You have another one of those?" He asks pointing at her mug.

"Oh sorry, where's my manors." Gabby jumped up flustered moving past the half wall that seperated her bedroom area into her kitchenette." It's hot chocolate, is that OK?" She calls out to him.

"Well you do owe me one from last night." Matt says walking into the kitchen in just his stopped what she was doing to take in his perfect physique, although she explored most of it during their evening together it was still irrestable to look at." Like what you see?" He chuckles catching her oogling.

"Oh right." Gabby takes her finger out of her mouth that she just licked the cocoa powder off turning her attention back to the mug on the counter.

"Do I make you nervous." Matt whispers in her ears as he had quietly approached pulling her hair off her neck, placing a kiss there.

"A little yes." Gabby wallows thickly before turning to face Matt." I don't want you to think I'm that girl."

"And what girl might that be?" Matt took a stepback looking at her confused.

"The girl that just goes home with anyone." Gabby dropped her eyes to the floor." Just a quick easy lay."

"Well I don't know much about you, Gabby, but that impression was far from what I have precieved from you." Matt took a step closer to Gabby undoing her robe tie then quickly lifting her up onto the counter as her robe fell open." I'm just getting to know you."

Gabby moans out "Dawson." As Matt's lips explore her body once again.

"What?" Matt stops what he's doing looking up at Gabby.

"Dawson." Gabby says breathless opening her eyes to meet his." My last name is Dawson."

"Casey." Matt mutters before pressing his lips firmly on hers, as they lose track of time once again.

Matt stepped out of the locker room the next morning at 51, with a permanent grin on his face. He had only left Gabby's apartment an hour earlier giving himself just enough time to get to work. His grin widened thinking back to an hour earlier kissing her goodbye at her apartment ." So Gabby Dawson can I get your number?" He asks taking a step back into the hallway.

"No Matt Casey you can not." Gabby chuckled with her flirtatious smile." I'm not that kind of girl." She takes a step forward kissing his lips once more." But you do know where I live." Gabby winks before stepping in her door and closing it.

"Oh that hurts." Matt calls through the door before shaking his head walking away laughing. Gabby watching him through the peep hole till he was out of sight then turning pressing her back to the door smiling like a school girl.

Matt takes a seat in the conference room next to Severide now." Hey who's that?" Matt nods to the tall dark haired guy in a chief's uniform.

"Well if you checked your messages you would have known Boden's dad died."

"What?" Matt whispered." My phone is dead." He said pulling it out of his pocket.

"That's what happens when you don't come home, Casey." Kelly chuckled." I see you took my advice and had some fun."

"Yeah I did." Matt looks up grinning." But she's different."

" Oh god, here we go." Kelly claps his shoulder but they end it there for the new chief starts to speak.

"I'd like to introduce myself, I'm deputy chief Pat Pridgen, I've heard great things about this house, and I'm sorry for your Chiefs loss. But I'm sure we will all get along great for the interim. Where are my lieutenants?"

Matt stood first walking up with Kelly right behind him." I'm Matt Casey,Lt of truck, this is Kelly Severide, Lt of squad." Matt points to Kelly as they each shake his hands.

"So first order of buisness,there will be some new faces here while interim chief, as you all know my station was shut down a while back, so It just so happened the to vacant spots on your rigs our the position of the firefighters I need to give a home to."He walks to the door waving two people in.

"This should be interesting." Kelly whispers to Matt, as they both chuckle lightly.

"Severide right?" Pridgen points to Kelly." Tommy Welch will be your relief aassignment." He says as the room goes silent all of 51 looking at that very familiar face that had caused major drama for the truck crew when he was ready to let let Joe Cruz take the fall for an accident he caused.

Matt shared a glare with TommyWelch a years old fued that stemmed back to their days in the academy. Before Matt could protest Pridgen was speaking to him now but the only words that regestered to him were two, a very fimilar sounding words, although he used one other word before the other two." Candidate Gabby Dawson." Was all Matt heard leave Pridgen's mouth.

The room went silent to him ass Matt's glare left Welch's and made contact with a set of very familiar brown ones. Gabby's eyes locked with Matt's blue ones, and they both shared the same look, stunned and shocked.

Matt glanced over to Kelly now who was trying to contain his smirk." Different huh." He mutters.

"Shut up." Matt mutters back before moving his eyes back to Gabby's.