AN: Just reiterating the warning. This is probably the kind of fic you want to read alone at 1am in the morning when you're half-crazy from insomnia, and also one that makes you pray no one sees your internet history. Enjoy!

It got worse, not better. A week had gone by, and sitting around mentally cataloguing all the things that made Colby amazing was not productive towards forgetting this crush. He tried to focus on the TV but his eyes kept wandering back to the younger cop, who was transfixed by his laptop as usual.

Like the hair, God he wanted to get his fingers in all that gloriousness, and that mouth, the things he could do with that plush mouth.

Dean plonked down on the couch beside him, jolting him out of his thoughts.

"Bit jumpy there," the younger man observed, giving him one of those grins that said he knew too much.

"No," Robbo lied, turning back to the TV with a frown.

"Hey Colbs," Dean said, and Robbo couldn't help looking over at Colby again, who had lifted his eyes from the screen to focus on Dean. "Why don't you go to bed?"

"I'm not done here."

"I'll be in in a minute," Dean pressed.

Colby's eyes crinkled up in one of those adorable smiles.

"Yeah, alright," he agreed, shutting the laptop and standing up to stretch. Robbo tried not to stare when Colby's shirt rode up a bit and flashed some skin, but really, how could he look anywhere else?

"Goodnight," Colby said and it took Robbo a beat longer than it should have to realise Colby was talking to him.

"Uh, yeah, goodnight," he managed to get out, fisting his hand on his thigh, and shifting in what he hoped was a way that looked casual and natural, and not like he was trying to hide something.

Colby headed off and if Robbo had been Dean, it would not have taken him a whole minute to get his arse into that bedroom.

As it was, he glanced at Dean to find him looking back with a devious look. He knew the River Boy well enough now to know that something devilish was coming.

"He's something, isn't he?" Dean said.

"I dunno," Robbo said, half laughing, trying to brush it off.

"C'mon," Dean pressed. "You think I haven't noticed the way you look at him?"

Shit.

"Look mate, I'm not trying to cut your grass. You're the ones that said I should stay."

Dean was still looking at him with that unnerving smile.

"We meant it. Colby likes you. You ever tried two guys at once?"

"What?" he squeaked, his voice an octave higher than usual.

"Think about it," Dean grinned, not so subtly brushing a hand over Robbo's thigh as he stood up. Then he leaned over the back of the couch and put his mouth right by Robbo's ear, and he couldn't deny the pleasant tingle that ran through him at the feeling of Dean's warm breath on his skin. "It's fucking unreal, whatever position you find yourself in." Then he nipped Robbo's earlobe with his teeth, laughed, and followed after Colby.

Robbo sat frozen to the spot. Jesus Christ, what the hell had just happened? Could Dean actually be serious? Would he really share Colby?

As a matter of fact, he had never been with two guys before, not ever. In his whole life he'd only been with one other bloke, and that was back at the academy when he and Lance used to fool around a bit.

If he'd been a less cautious person, he might have taken Dean up on the offer, but he couldn't, not without thinking it through first. Could he? Because as much as he would love the opportunity to be with Colby, the idea of it turning bad and losing him as a friend was one he didn't think he could risk.

xxx

Of course Dean was keen to go to bed with Colby, that was a given, but he also wanted to get him away from that bloody computer. He was obsessed with it, especially because he was suspended from work and had nothing better to do. He spent all his time searching for Bella or Ebony. He wanted Colby to take a break, to forget all that for a while. Inviting Robbo to join them was supposed to be a fun way to do that, not that he really thought the bloke would accept the offer, he was too much the good guy.

He found Colby sitting on the edge of the bed, scrubbing his hands over his face.

"You okay?"

"Yeah. I should be used to the disappointment by now."

It made him uneasy to see Colby upset like this, even if he was insanely beautiful when he was sad.

Dean climbed onto the bed behind him, sliding his arms around the taller man and nuzzling his cheek.

"Disappointed shouldn't be a state of being."

"It isn't," Colby assured, wrapping his fingers around Dean's arm and turning his head so their mouths could meet.

"Good," Dean smiled against Colby's lips, before deepening the kiss.

They kissed like that for a few seconds, but it was an awkward angle, and he was happy to go with it when Colby manoeuvred them around so Dean was on his back underneath the bigger man. He wrapped his arms around Colby's neck and kissed him for all he was worth. Having Colby back was everything.

He pulled Colby's shirt up to feel more skin, breaking the kiss for a second so they could pull it off altogether.

As always, Dean loved being able to see Colby's tattoo which matched his own. He remembered the day they got them, he was just a kid, not old enough to legally get ink, but they were River Boys so the rules didn't matter. And so what if he'd been shitting himself? Colby was there and that always made everything okay.

"I love you so much, Colb. You know that, right?"

"Yeah," Colby agreed, half smiling, half frowning, maybe a little confused by the intense, almost desperate way Dean had said it. "What's wrong, babe?"

"Nothing," Dean dismissed, which wasn't to say it wasn't true, he did love Colby, but he was a bit embarrassed now. He didn't need to say things like that, just show them. "Bare that arse and ride me."

Colby leaned down and pressed a firm kiss to his mouth.

"Only 'cause you asked so nice," he grinned.

They got naked quick smart. A little lube was all it took for Colby to take him inside, they'd fucked this morning already and Colby was still loose enough.

He rocked up and down, clenching around Dean, and God if this wasn't heaven, nothing was.

xxx

He could hear them, it was impossible not to in a shoebox like this.

His dick throbbed, obviously not struggling with the same dilemma his brain was. Dean had asked him to be part of it, maybe he should just get in there already.

He hesitated a second, and then found himself edging towards his roommate's bedroom door instead of his own. Maybe he could just take a peek. He swallowed nervously and peered into the room, careful so he wouldn't get caught.

Colby was naked, he saw that straight away. All that milky skin on show as he rode Dean, eyes screwed shut, lips parted.

Without knowing it, his own hand slipped into his pants, drawing a moan from him as he wrapped his fingers around his cock. He was so hard. Hard for Colby.

The unintentional sound was loud enough that the others heard it. He'd have been mortified about being caught if he wasn't so fucking horny.

Dean of course just gave him a knowing grin, but Colby looked surprised to see him. Not upset like last time, but curious. He looked down at his partner, and Dean nodded. Then the most amazing thing happened. A grin spread across Colby's face and he held out his hand in invitation.

Robbo was across the room with his clothes thrown off, before you could say 'ménage à trois'.

"Grab that tube there," Dean said, indicating to some lube.

"You good with this, Colby?" Robbo checked, as he slicked himself up.

"Hell yeah," Colby laughed. "Dunno why we've waited this long."

"Just to be clear," Dean said, gazing at Robbo over Colby's shoulder, "our cocks are gonna touch."

"Yeah, I got that," Robbo smirked.

"You blokes done chatting?" Colby prompted.

"Is he always this pushy?" Robbo wanted to know.

"When I'm lucky," Dean grinned.

"C'mon," Colby whined, rolling his hips, drawing a gasp from Dean.

"Better do what the man says," Dean advised.

Robbo slid his hand along the ridge of Colby's spine, bending the other man forward, to expose his butthole. He looked down to where he could see Colby stretched tight around Dean's shaft, biting his lip to keep from coming at the sight alone.

It was hard, obviously, to make this work. He had to fight to make room for himself, pushing inside a place that was already full. Neither of the others moved, but he could hear them breathing, breathes coming in heavy pants. With Dean in here too, Colby was so tight, and Dean was right, it was fucking incredible. He pushed until he could go no further, and it was when he started to pull out that both Dean and Colby, found their voices again.

"Oh God yes," Colby moaned.

"More. Faster," Dean begged.

Robbo gripped Colby's shoulder, looking down again, this time seeing himself sheathed inside this sexy arse he'd been dreaming about. He knew he wasn't gonna be able to hold on long, so he decided to grant Dean's wish. Colby was more than an instrument of pleasure though.

"You happy with that, Colby?"

"Fuck yes," was the enthusiastic reply.

Robbo didn't hold back, he pumped his hips fast. Working in and out, the tightness and the friction, created by a combination of both of these men, was like nothing he'd ever experienced before. And then Dean came, shooting his load up inside Colby, babbling out a string of curses. Colby followed almost straight away, using his hand on himself, arse clenching tight around them.

When Robbo came it was a moment of pure bliss.

He felt half crazy, like he couldn't believe this had really happened. Except there they both were, Colby lifting himself off Dean, flopping down half on top of him, both of them slick with sweat, and trying to catch enough breath to laugh.

"That was fucking incredible," Colby puffed out against Dean's neck.

"You always are," Dean grinned, carding his fingers into Colby's hair and lifting his head enough to bring their mouths together for a messy kiss.

Robbo was happy for them, for himself too, but now that the pressure had been released he felt like he was intruding on a private moment.

"We've made a bit of a mess here boys." Neither of them seemed to care much about that.

"You were so good," Colby told him.

"You weren't too bad yourself," he replied, totally clueless about the etiquette in a situation like this. Especially because they hadn't really even talked about it, it just sort of happened.

"Told ya," Dean grinned. "Fucking unreal, right?"

"Sure was," Robbo agreed. Incredibly happy and inexplicably sad at the same time. The sex was top shelf, but he'd never much been one for a meaningless fuck. He liked connection and intimacy, and as far as this relationship went, was wasn't involved in that side of it. He suddenly felt lonelier than he had in a while.

He climbed off the bed and grabbed his stuff. Doing it quickly before he got carried away and made an idiot of himself by saying something uncalled for.

"I'm gonna go get cleaned up."

Personally, he thought he did a pretty good job of hiding his disappointment when neither of them protested.

AN: If you're looking for more Dean/Colby, maybe something a bit more vanilla, check out the other fic I posted today called 'Lessons Learned'. I've also posted some fluff for them on my AO3 account. Same username, it's in a fic called 'Scenes of an Unfinished Nature' if you can be bothered to go looking for that. Thanks for reading :)