Sam looks away from his brother, finally looking at Bobby. He hopes that the confusion doesn't melt into disgust. He isn't really ready to handle that.

"Dean and I....we're sleeping together." And he would give anything in the world to not have to tell Bobby this. But it isn't fair to keep such a big secret. Especially when he and his brother aren't just fooling around. It isn't just sex, and that's why Bobby deserves to know.