Cas really needs to learn how to talk to people. He's bad at it.

"Yeah, well, only because your angelic buddies shoved it on me first." Dean will always deny how much he sacrifices for the people around him. It's just something he does, not something he thinks about. Or wants to think about.

He flags down the waitress and pays the bill, getting another couple burgers and two slices of pie to go. Next step, motel. He waves for Cas to follow him, heading back out to the--oh. Hey, motel across the street. He'll take that. One room, two beds, and he takes the one closest to the door. Just in case Cas changes his mind about staying in the middle of the night.