The first time it happened it was a mistake, cas swears. It was a pretty average hunt, one very similar to a previous one - a shapeshifter making its way through the sewage system of the city. They ganked the guy as soon as cas zapped in and it was a pretty easy case all things considered, but by god was it a disgusting one. Sam called first shower pretty much as soon as they got in the impala (after Dean had set down sheets to protect his baby).
Dean dropped cas off at the grocery store to get some supplies for the next few days, sam gave him a list so hopefully he would get the things they needed this time. Sam and Dean arrived at the bunker and Sam must have been a good half hour in the shower, conditioning his damn perfect hair. Dean always took the piss out of him but he did like Sams hair. Sam finally opened the bathroom door after a further 30 minutes and decided to go and do some research on their next case - a simple vengeful spirit by the look of it.
"Bye dean, don't do anything stupid while I'm gone" Sam didn't wait for a reply before he shoot the door behind him. Dean didn't hear him anyway, he was too busy downing half a dozen shots of pure whiskey - the good stuff that Crowley liked. Cas appeared in the room just as Dean was about to hop in the shower. Cas looked exhausted, he shouldn't have used his mojo just to save him walking 12 blocks. Like the gentleman he is - Dean got up, took the bag off of cas and let him have first shower. Dean started putting the groceries in the kitchen , bananas, orange juice, broccoli (Jesus you could tell sam wrote the list) and... a pecan pie that sam specifically said no to in the car. Cas is such a sweetheart he thought. No he's not, fuck did Dean really just think that? No cas is a bro for doing another bro a favour, yeah bros. God he is sad.
After 6 shots of whiskey Dean completely forgot cas was even in the shower as he went in unzipping his pants. he didn't even notice he wasn't alone in there until a loud shout of "Dean, what're you doing in here?!"
Shit. Cas was fumbling around pulling his pants back up, already shirtless. Dean only caught a glimpse of Cas' chest before turning around with his hands in the air "Shit, uhh sorry, I uhm forgot you were in here" he quickly shut the door and cleared his throat. Fuck that was awkward. He walked out the bathroom took his shirt off and sat on the nearest couch with a beer in one hand and the TV remote in the other. Dean flicked on the TV and look what happened to be on from last night. A porn network. Dean was never one to turn down a beautiful lady (even if she was on his television screen) so he dropped the remote and swapped his beer to his left hand. Fly already open and... dick already half hard, that's weird. Anyway Dean got his free right hand and started slowly pumping his dick with it, using his own spit as a make shift lubricant. He was grunting already, he hadn't gotten off in weeks- which was like years in deans head. His hand moving the same pace as the guy fucking the blonde on the TV. Usual bad acting missionary stuff but Dean wasn't complaining, her fake tits bouncing and staying in perfect shape as the hairless guy ploughed into her again and again, it was enough for Dean to get off on. He threw his head back and shut his eyes but Dean was getting close almost embarrassingly soon, he'd only sat down 5 minutes ago and he wanted to make this one last. so he changed his speed, keeping in time with the guy on the screen and that got him less on the edge. He lifted his head up off the back of the couch and took a swig of his beer. Dean was feeling more relaxed now so he opened his eyes to take another look at the tv and there he was. Standing there all wet and beautiful (that's definitely the whisky talking Dean reassured himself) but there Cas was, standing, hair dripping wet, towel wrapped around his waist and his gorgeous blue eyes just staring at him. "FUCK" without realising, at some point dean's hand sped up and with his head thrown back again, he was groaning and within 10 seconds, coming, white and wet all over his bare chest. He had to take a few seconds to catch his breath because holy shit that was a good orgasm.
"WHAT THE FUCK CAS HOW LONG HAVE YOU BEEN STANDING THERE?" Dean virtually screamed at the other half naked man in the room. He quickly stuffed his softening cock in his pants and stood up. The shining sapphire eyes and glistening chest he was staring at was not helping his anger at all, (neither was the woman moaning in the background but that wasn't one of deans priorities at the minute) "not long, about five minutes maybe" FIVE MINUTES? Fuck maybe Dean had been going longer than he thought. "I'm sorry, I got out the shower and I came in here looking for you so I was just waiting for you to finish, I'm sorry dean"
Waiting for him to finish? That was the most ridiculous -And hottest- things he'd ever heard. Cas had just been watching him jerk himself off, fuck, "okay cas, here's a little tip for you Don't fucking do that" Cas looked a little hurt "Its creepier than watching me sleep and that was pretty fucking creepy," Cas took a step back worried dean was going to hit him or something but Dean followed him "What were you even.." he was interrupted by keys turning in the door. Shit, how long had he been jacking off for? Dean ran for the bathroom as soon as he heard the door open, both doors shut at the same time. "Our witness' store closed at 8 so we ll have to go back tomorrow" sam shouted through the bunker -expecting someone to reply this time but nope. Cas was still standing in the same place when Sam walked in the room and obviously, he noticed the porn playing on the tv. "uhh hey Cas, where's Dean?" Cas looked down and realised he was still only wearing a towel and that he had a semi erection formed. Sam followed cas' eyes and saw the bulge too, he made a very grossed out look before announcing quickly that he was going to bed. Sam ran to his bed and the shower started around the corner.
The next morning, dean didn't remember a thing. No harm, no foul -right?
