Dean and Bobby in “Unfinished Business”

Dean

I'm not even sure if he's still my brother anymore. If he ever was.

Bobby

You stupid, stupid son of a bitch! Well boo-hoo, I am so sorry your feelings are hurt, princess! Are you under the impression that family's supposed to make you feel good? Make you an apple pie, maybe? They're supposed to make you miserable! That's why they're family!

Dean

I told him, "You walk out that door, don't come back," and he walked out anyway. That was his choice!

Bobby

You sound like a whiny brat... No, you sound like your dad. Well let me tell you something, your dad was a coward.

Dean

My dad was a lot of things, Bobby, but a coward?

Bobby

He'd rather push Sam away then reach out to him. Well, that don't strike me as brave. You are a better man than your daddy ever was, so you do both of us a favor. Don't be him.