Oh, let him. It's not like it's the first time Dean's shared his bed with someone, though to be fair, he'd prefer it if Cas were a little more curvy than he is. Had tits instead of junk. But whatever. He's shared with Sammy before, when space was tight, money was tighter, and the weather cold. It's not that big a deal to share bed space with another dude.

Dean shifts on the mattress, trying not to jostle his bruised arm too much and trying not to think about how bad that's gonna feel come morning. Nothing to be done for it now. They'll fly under the radar for a couple days until it heals up and tackle more Leviathans after. Smiling a little at the thought of ganking more of those bastards (for certain values of ganking), Dean shuts his eyes and settles in.

"Night, Cas. Get some sleep."