[Sam honestly can't help but look a little relieved to hear it. The idea of people around him talking to the man who had imprisoned him, tormented him for years, ruined his life for his family infighting - it was nice to know Castiel had found his line in the sand, and didn't want anything to do with him.

He won't ever let you go.

Sam nods in agreement where he's leaning against the backside of a chair, growing quiet for a moment.]

... I know.

... Sorry, I, um. I guess I should have more faith in you.

You're one of the only people I've got left, these days.