Chapter Summary: Severide's in Las Vegas to take his mind off of Shay dying. Harry's in Las Vegas for a business conference. (Chicago Fire, Season 3)

"You're from Chicago?"

"Yeah, but that's not… Oh, fuck!"

"I'm on the way to Chicago for a temp job."

"I now pronounce you husband and husband. You may now kiss the groom."

The lone witness clapped enthusiastically and Harry rolled his eyes, eying his new husband. "He's drunk."

"Yeah, he is. Thought you didn't give a shit about witnesses," Kelly Severide said, mischief in his brown eyes, heat flickering in and out. They stood close together, drunk as thieves. Or was it thick as thieves? Kelly shrugged and smiled heatedly at Harry, wanting more of the man's everything. Wanting to burrow into him forever and never leave. Never go back to Chicago, to the place that was empty of Shay.

"I don't." Harry smirked at Kelly and yanked him right into a kiss, curling his hands around the other man's neck. Kelly groaned, his eyes widening, and melted into him, shivering slightly as Harry's fingers scratched at the nape of his neck. Harry's other arm curled around his waist, thin pricks of heat at each point of touch.

"Let's go, husband," Kelly urged, curling his arms around Harry too, tugging the man towards the door of the small chapel.

Harry snorted and followed Kelly out of the chapel, right over to the other man's rental car.

The moment that they stepped into their hotel room, Harry shoved Kelly up against the door, seeing his pupils blow wide with arousal. Kelly's breath hitched and Harry smirked, pulling back a little to strip off his shirt, letting it fall down to the floor. Las Vegas certainly wasn't as cold as London or New York but it was humid and sweat dripped down his back.

Harry watched as Kelly's eyes flickered down to Harry's bare chest, seeing that gaze pause on the mark on his own chest. The mark that the second killing curse had left, a scar tinged with green and blossoming, different than the scar on his forehead. Kelly's gaze moved to the hint of tattoo on Harry's back, the fiery red wing that curled around his hip.

"Never have seen a fire make that kind of mark," Kelly offered roughly, swallowing as Harry closed the distance between them. His cock was hardening within his jeans and the look in Harry's eyes was making his heart beat quicker, the promise of even more hot sex.

"It was… different," Harry spoke, something in his voice that Kelly hadn't heard before echoing in the room. He knew Harry had spent his whole life in England, had gone to school in Scotland, and was now in Las Vegas for a business trip. Business conference, the man had said. "The war I fought in… took a lot from me."

Kelly's stomach lurched at the words and he leaned in to draw Harry into a kiss, feeling, hearing the man's breath catch. Harry burrowed into him like he was burrowing into Harry, like two drowning men in search of water. A noise left Kelly's throat as Harry moved, nipping a line of kisses down his chin and throat, sucking a bruise into the side of his neck.

Harry tugged at his shirt, meeting his eyes pointedly, heat echoing in those green eyes. Heat that made Kelly shiver, goosebumps rolling up his arms. "Off. I wanna see you, babe."

Kelly groaned and yanked his shirt off, throwing it off to the side, not caring where it landed. Harry reached out and traced his fingers up Kelly's stomach, making his stomach muscles ripple, and up onto his chest, smoothing a thumb over a nipple. Kelly gasped out on a strangled breath, jerking a little as Harry leaned over to pull on his other one, tugging at it for a moment before letting up.

"You like what you see?" Kelly asked slyly, grinning as Harry's pupils dilated even more, his tongue peeking out.

"Kel, you're gorgeous," Harry retorted, winking at him, curling his fingers into Kelly's hips and walking backwards with him. "I don't think you need me telling you that though. You want me to tell you how I'm gonna fuck you?"

Kelly moaned and closed his eyes at the words, at how Harry had let his voice drop. "What if I say yes?"

Harry snorted even as Kelly curled his arm around his sides, running his fingers over Harry's warm skin. Goosebumps rolled up Harry's bare arms and Kelly grinned at the sight before a noise of consideration left Harry's throat. There was something in Harry's gaze that made him swallow, as one of Harry's hands slipped down to cup him through his jeans.

Kelly groaned as electricity shot through him and bucked into his husband, the thrill of the word echoing through his ears and whole body. Harry grinned even wider and tugged the both of them right over to the bed, giving him a light shove onto the bed. Kelly laughed and shucked off his shoes, unbuckling his belt and shoving his jeans off to bare his hard cock.

Harry stayed standing at the foot of the bed, looking him over slowly before sparing a look at the top of the bed. To the big, sturdy looking headboard of the bed. "I want to try something."

"Yeah?" Kelly questioned, sprawling out on the bed, like it was his own bed in Chicago, in… The bed moved as Harry placed one knee on it, nudging his knees apart, and sliding into the vee of Kelly's legs. He laid his hands down to Kelly's knees, smoothing his fingers over Kelly's hot, tan skin. "Try me. I've been around the block more than you have."

Harry laughed and heat flickered in his eyes. "I am one year older than you, you know."

Kelly stuck out his tongue at him and Harry laughed, his fingers still tracing over skin and muscle.

"Grab onto the headboard. You move and I stop touching you."

Kelly froze and a sound left his throat unconsciously, lust flooding his body very fast and very hot, like the fastest fire they had ever fought. His voice, when he spoke next, was rough with arousal. "Aye, aye, Captain."

Harry snorted, amusement lighting up his eyes, as Kelly stretched out on the bed, not a stitch of clothing on him, and grabbed out for the headboard behind him. Harry watched as his…husband's cock hardened even more at the order, heat gathering in his own stomach and body, making him lick his lips. All that warm, tan skin beneath him and he was allowed to touch.

He traced his fingers up Kelly's legs, feeling the muscles twitch and ripple underneath his fingers. He followed up with his tongue, tracing a line of wet heat all the way up to Kelly's hips, seeing the man twitch, seeing the way his breath hitched. Harry pressed a kiss into the skin there, keeping his fingers away from the cock right under him.

Kelly groaned and arched up, trying to chase his fingers, his pupils blown with familiar arousal. They'd only known each other for the weekend and had sex all over the hotel room, over the room that Harry had paid for. Kelly's eyes had widened the moment he had walked into it, at one of the more expensive rooms of the hotel.

"You still stretched out here from this morning?" Harry asked, lowering his voice, hearing how rough it sounded. "Still wet from my come in your ass?"

Kelly let out a strangled noise, his cheeks red, holding onto the headboard with a white knuckled grip. "Harry."

"What? You said you wanted to hear how I'm gonna fuck you," Harry retorted, letting his fingers slip down, smoothing over the skin of Kelly's inner thighs. "You're a firefighter. You're supposed to be good under pressure."

"Not this kind of pressure, babe," Kelly argued, gritting his teeth, his eyes fluttering closed and just as quickly reopening as Harry leaned down to mouth over skin, over his cock. "Fuck!"

Kelly groaned and bucked up as Harry smirked, nipping little marks into his thighs, licking the skin afterward. Electricity and heat rocketed through him, licking into him like the flames of a fire, as Harry moved over him, licking another stripe down his cock. He met Harry's eyes as one of the man's hands moved, fingers smoothing over skin, trailing downward to circle his ass.

Remembered pleasure set him on edge but he didn't ease his hold on the headboard, seeing a flicker of something flash in Harry's eyes. Heat, memory and… Pleasure shoved everything else out of his mind as Harry circled his hole, thrusting in shallowly. Pre-come spilled from his cock and he arched down into those fingers, trying to get more.

Harry smiled down at him and then pulled back a little bit, causing Kelly to sputter, twitch on the bed. "I'm just getting my jeans off. Hold your horses."

"Good, because you can't leave me hanging here."

"I can't, huh?" Harry pushed down his jeans, his underwear, and threw them off the bed, giving him a pointed look. "That covered in the marriage contract? I can't leave you hard like this?"

Kelly shuddered, groaning as his cock hardened even more, leaving him almost breathless. Arousal burned through him and he dug his fingers into the headboard. "Ahhh, come on, man."

Harry just sat there a minute, his pupils blown, his breathing hitching every other minute, before sliding back. He stroked a hand down Kelly's cock, making him buck up into his fingers, and then moved his fingers down to curl into him. The heat turned his nerves on, setting him alight with pleasure and electricity and made him buck, as Harry's finger hit that spot.

His vision almost greyed out at the sudden pleasure, rocking the bed. Sweat dripped down his forehead and he panted with the motion of it, seeing Harry lick his lips.

"Husband," Harry murmured, leaning down to press their mouths together, licking into his mouth, brushing his tongue against Kelly's, practically tongue fucking him. A shiver rolled through him even as Harry slipped another finger into him, loosely stretching him, idly, before pulling back. He lined himself up and slid right into that wet heat, feeling Kelly twitch around him.

Liquid heat flooded him as he made himself at home inside the man under him, thrusting in lightly, and seeing Kelly's eyes flash with irritation at not being able to move his hands. Harry smiled, sucking in a deep breath, and leaning down to trail his fingers over Kelly's chest, curling into his hips, leaving lines of red. "I like the sound of that."

He paused there a moment, breathing heavily, laying his head in the crook of Kelly's shoulder, and sucked a bruise into the hot skin. Kelly tensed up beneath him, trembling with the effort, his short hair mussed up. Harry could feel Kelly's breath against his neck, tickling his own skin, as they both adjusted.

"Fucking move," Kelly begged, his voice rough, low, shaking his head. "Or let me touch you. Please."

Harry's lips twitched up into a small grin, making Kelly hope he was about to say yes. "No."

Kelly shuddered and let out a whine even as Harry thrust in deeper, hitting the spot that made him yell, pleasure setting his nerves on fire. Sweat dripped down his back, making the sheets stick to him as the room filled with the sound of fucking. The stench of sex radiated from them both as Harry began to fuck him in earnest, sliding in and pulling out, before rolling his hips against him.

Skin hit skin and the bed creaked a little bit under their movements. Not as much as a shitty motel bed but Kelly grunted at a particularly deep thrust from Harry, sending him sliding against the headboard with force. Harry pushed apart his legs even more after a second or two, shuffling closer and closer, dropping his hands to Kelly's inner thighs to curl and dig into.

Pleasure coiled under his skin like a snake, burning its way through him as Harry moved, slamming in deeper and closer than before. They were both breathing hard, both hot and sweaty and Harry leaned in, dipping down to press a kiss to his forehead, his lips lingering for a moment, accompanied by thrusting even harder, hitting his prostate with each move and sending him over the edge. He just barely felt something wet drip down his cheeks, his eyes blinking at the affectionate gesture.

He yelled out as he felt his muscles clench around the cock inside him, feeling fuller than he had ever felt. Come spurted from his cock, white milky strands of it spraying his stomach and every inch that was between them. His vision greyed out and he tried to catch his breath, feeling Harry come inside him a second later, spilling inside him.

The feather light touch to his cock made him open his eyes several minutes later to Harry above him. His green eyes were soft, worry flickering in them, as he wiped Kelly down, dragging a warm wet cloth over his stomach, wiping his… tears away from his cheeks with his fingers.

Kelly closed his eyes, panting through the aftershocks of what might have been the best orgasm of his life. His fingers were still digging into the headboard, digging into the wood, and he felt Harry curl his own fingers through his, uncurling them, and threading their fingers together. Harry brought their combined fingers to his cheek, making him open his eyes at the touch.

"You did so well. We're in this together," Harry murmured, meeting his eyes. "You're not alone."

Kelly let out a raw noise and sat up, burrowing into Harry's arms. Harry for his part didn't move, only wrapping his arms around Kelly, tight enough to bruise, curling around him.

"I miss her," Kelly whispered against Harry's warm chest. "So much."

Harry hummed in reply, curling a hand around the nape of his neck. "She sounds like a really great woman and a really good best friend."

"She was."

"I can't wait to meet your fire house family," Harry said, reaching out to rub a hand down Kelly's shoulder, hearing the man's breath hitch.

Chicago was entirely different from Las Vegas or even London. It was all shiny and silver skyscrapers and a packed airport that Harry would never willingly step foot in again. Flying back on the plane with Kelly had also been a first and last but perhaps… He glanced over at Kelly in the driver's seat of the car, looking out at the firehouse in front of them.

"I…" Kelly paused, glancing out of the window of his Camaro. He was dressed for work, in a grey shirt that had CFD on the back of it, along with his day kit in a duffel. "We'll need to look for a place to live."

"I can do that. You've got shift," Harry remarked, watching as Kelly parked the car and pushed the driver's seat door open. "Hey, Kel?"

"What?"

"I can come in at lunch time," Harry offered, brushing his shoulder against Kelly's to grab the man's attention. "Cook lunch for you guys. You all like food, right?"

Kelly turned to look at him, his eyes brightening up immensely at the thought before giving Harry a pointed look.

Harry snorted and nodded. "Stupid question. And one other thing. You gonna tell everyone?"

"Hell yeah. We're married! Why the fuck not?"

"I can think of only one reason not to," Harry offered, grinning a little in amusement at the thought.

Kelly blinked at the words and he lifted an eyebrow. "And what would that be?"

"The potential for hilariousness," Harry replied, his grin widening. "You lot pull pranks on one another. There's a gossip vine, judging by what you've told me. We could watch people wonder about our relationship, see who either realizes we're married or who comes closest."

Kelly snorted and stepped out of the car. "I like the way you think, babe."

"Course you do. See you around lunch time? I'll get to meet everyone too."

"Yep. See you then."

AN: Help, I've fallen into the Chicago Fire, PD and Med rabbit holes and I can't get out.