Cas wakes up with his face still buried in hair, the same rhythmic breathing under his hands, that he doesn’t notice anything’s different. He lays there, surrounded by Dean’s scent and his warmth, that it takes him a while to realize that Dean’s a lot bigger than he was last night.
Cas immediately tenses, too scared to move in case Dean’s still asleep and there’s still time to salvage this mess-
Sensing Cas is awake, Dean says with a rough, unused voice, “Was I… was I really a dog? Or was that a really fucking weird fever dream?”
Cas swallows the lump in his throat. Dean hasn’t run away, so that’s a plus.
A pause, before a thoughtful and somewhat worried, “Was I like, a small dog? Because I remember thinking you and Sam were huge.”
“You were an average sized dog, I believe. As far as dogs go.”
Dean hums an acknowledgement. He’s still there, in Cas’ arms. Cas can feel his heartbeat beneath his hand, steady. Dean’s in the clothes he was wearing on that hunt, smelling fainty of dog but also very human smells like sweat and blood. He drags his hand along the fabric in a small motion, a sublte motion to test the waters.
Dean doesn’t stir, doesn’t try to pull away. It’s almost as if he doesn’t notice the touch, or if he does, he’s so used to it that it doesn’t register as strange.
He might very well be too used to it to realize that as a human, this is not at all their norm.
“Are you okay?” he asks hesitantly. He wants to, needs to know, but he’s worried about the can of worms he’s opening.
“Yeah, I think so. Kinda… fuzzy? I guess? Er, furry?” He doesn’t even laugh at his own joke. “Not quite all back yet, I think.”
“Ah,” Cas says neutrally. That explains it. He’s physically human but not quite all mentally human yet. He’ll freak out soon, then. “How much do you remember?”
“Uh, all of it? Maybe? The memories aren’t… normal. It’s not like when I try to remember stuff from before. It’s just… impressions. Smells. Sounds. A few images. Feelings,” he says, and that word hangs heavy in the air between them. The air feels charged now, more electric and dangerous than it was a moment ago.
“And?” Cas prompts. He genuinely wants to know more, both for his own selfish reasons and out of sheer curoisity.
“I knew you guys, you and Sam. Sam was familiar, like… like I knew he was family, he was safe and he would be good. And you…”
Dean takes a deep breath, and yes, this is it, here it comes.
“You were… safety? Home? I dunno, you were like how I feel as a human eating in to a slice of warm, fresh baked apple pie. You were… I dunno, everything?”
Cas’ brain shuts down, his pulse picks up, and he feels vaguely like he might pass out.
“And you would give me all this attention, and I fucking loved it. It was like the greatest thing ever. Better than sex, that’s how good it felt to dog brain me.” Dean’s voice wavers. “And then you left, and that was… awful. That was like when you died and we- and I-”
His breath hitches, and Cas’ arms automatically tighten around him.
“I’m here,” he can’t help but say. “I’m back. I always-”
“Come back,” Dean interrupts. His voice is strong again. “I know. I… know. I maybe wasn’t sure, but you said you’d come back and you did. I really thought you wouldn’t, but you did, and I still got to have you near me and taking care of me and… and I can always have that, right? I don’t have to be a stupid dog for you to do all that stuff. I don’t have to hide behind some spell, I don’t have to behind pretending I don’t know what I’m asking for and what you’re giving. We could just… do that all the time.”
It clicks for Cas then, the way it must have for Dean sometime during the night.
“Was that your revelation?” he teases.
Dean wiggles around so that he’s facing him, his eyes a familiar and beautiful green, brighter than usual because they shine with unshed tears.
“Yeah, I think it was. So… can we still do all that stuff?”
“Are you saying you want me to rub your belly?”
Dean laughs, and then he smiles and Cas thinks he might die.
“Not exactly. I meant more the being together, the proximity, the touches, the uh… sharing a bed thing we’ve been doing.”
“Of course we can do all of that,” Cas assures him. He sees Dean’s about to speak, so he hastily adds, “Under one condition.”
Dean’s smile dims slightly as his nerves take over. He nods grimly, clearly preparing for the worst.
“Kiss me?” Cas asks, then their lips meet before Cas can properly register Dean’s reaction. It’s soft, tender, and a little wet.
“You kiss like a dog,” he says in surprise.
“I do not. No one has ever said that.”
“I’m saying it. Right now. This isn’t much different than when you would lick my face.”
“First of all, how dare you. And B, c’mere.” He pulls Cas in and kisses him senseless, again and again like he might never stop.
Overall, it’s easily the best moment of Cas’ life.