He woke slowly, aware of warm breath ghosting the crook of his neck and shoulder. Sunlight warmed his face, shining red through his closed eyelids. He opened them and blinked in the brilliant sunlight streaming through slatted blinds across the soft cream linen of the bed clothes.

He shifted slightly under the weight of a warm body against one side of his torso. The memory of Valentine's night flickered through his mind. The light Italian meal with far too much wine, a gift from the restaurant for being the best-looking couple in the place and then buying the soda and snacks at the movie theatre. Seeing Cas staring longingly at the themed soda cups and handing over the extra $5, mouth twitching with amusement at the simple pleasure Cas took as he went almost cross-eyed watching his soda flick around the heart shaped kink in the straw. Flushing red himself when he realised he was reacting to the sight of Cas, innocently hollowing his cheeks sucking on the tip of the straw. Covering it by flicking popcorn at him as they waited for the rom-com they had picked to start.

Good-naturedly bickering over the last spec of salsa, until he generously scooped it up on the last nacho and fed it to Cas, shivering as his lips brushed against his fingertips, swallowing his own reaction awkwardly by slurping his soda and accidentally making himself choke, til Cas patted his back, blue eyes wide in alarm.

A couple of beers in the bar next to the theatre had stretched into a couple of chasers. Cas sleeping on his shoulder for the cab ride back, leaning heavily on him as they walked up the path to the little house. Struggling to find the house key in Cas' jean pocket all the while trying to ignore the warm breath on his ear.

A chaste peck on the cheek at the bedroom door, as he ushered Cas to bed. And then, all those moments surged together and suddenly it was no longer enough, his hands developing a will of their own tangling into the soft dark hair, as Cas lazily held himself upright by gripping his shirt at the shoulder and hip. And then the kiss was deepening and they were falling drunkenly into the bed. Lips barely breaking contact as they stripped each other's clothes and slotted together in just their shorts. Then his memory failed him... had they... had he fallen asleep... had they... hazy memories of Cas moaning his name... had he...

What had he done!

This was Cas. Had he taken advantage of his best friend?

Cas had wanted to experience a romantic Valentine, he didn't know any better, not really, he hadn't been human long.

But Dean knew better.

He ran his free hand through his hair, a momentary panic surging cold in his veins. Then the dark head moved and soft hair tickled his cheek, a thick solid thigh slid higher up over his own leg. With a soft murmur of contentment, the arm under his shoulder pulled him tighter, as Cas nuzzled his neck, just below his ear, pressing his body against him as if he couldn't get close enough. And then he knew. It didn't matter what they had done, just why they had done it and because of that 'why', he knew exactly what he was going to do next.

With a soft smile he flexed his fingers into the short hair on top of his head, allowed his neck to relax and his head to fall back into the soft down of the pillow, with a twitch of his lips. When OctoCas awoke, he would teach him about another human tradition. Lazy, sunny Sunday mornings in bed with the one you love.