Dan tells Serena that her grandmother isn't who she thinks she is - after what she's said to Dan - but S isn't convinced and they both agree he shouldn't go to the ball with her. A very sad scene from "Hi, Society."
Carter: Nate. Look, I was hoping to see you, I wanted to apologize, put the past behind the past. Nate: You don't get to say what goes on here. I'm on to you.