Sam and Dean in “Unfinished Business”

Sam

But something's broken here, Dean.

Dean

I'm not saying that it's not. I... I just think maybe we need to put a couple W's on the board and we get past all this.

Sam

I don't think so. No, I-I wish, but... We don't...see things the same way anymore -- our roles in this whole thing. Back in that church, talking me out of boarding up hell? Or -- or tricking me into letting Gadreel possess me? I can't trust you -- not the way I thought I could, not the way I should be able to.

Dean

Okay, look. Whatever happened... We are family, okay?

Sam

You say that like it's some sort of cure-all, like it can change the fact that everything that has ever gone wrong between us has been because we're family.

Dean

So, what -- we're not family now?

Sam

I'm saying, you want to work? Let's work. If you want to be brothers...