Castiel nods - whether to the assessment of his uncle or in confirmation of Sam's suggestions is anyone's guess. Maybe both.

"I would like to make things right with Ellen. It's true that I've grown up with a large staff taking care of everything, but I hope I can carry my weight in your household."

Though he's still worried about it. There's a lot he doesn't know, a lot for him to learn. For now, he leans into Sam's touch. It's the first time they've been alone, truly alone, and Castiel isn't ashamed to admit that he's pleased with how he feels in Sam's vicinity. He's not sure it's love or instinct. But it's a good start at any rate.