Chuck: Home so soon?
Blair: Please tell me Jack was lying. You wouldn’t betray me like that.
Chuck: Me betray you? You’re the one who just came from seeing my uncle.
Blair: I went there for you. Because I thought it was the only way that would save your hotel. I would’ve done anything to help you, all you had to do was ask.
Chuck: If I asked, it wouldn’t have worked. You would’ve been too willing when Jack came to you. He would’ve known we were working together. I did what I had to to win.
Blair: No.
Chuck: I can’t let my feelings cost me all that I’ve built.
Blair: Even if means losing me instead. All I ever did was love you.
Chuck: The worst thing that I ever did, the darkest thought I ever had, you said you would stand by me through anything. This, Blair, is anything.
Blair: I never thought that the worst thing you would ever do would be to me.
Chuck: You went up there on your own.
Blair: Goodbye, Chuck.

Gossip Girl Season 3, Episode 17: Inglorious Bassterds