Chuck: I can’t let my feelings cost me all that I’ve built.
Blair: Even if it means losing me instead? [sobbing] All I ever did was love you.
Chuck: The worst thing I ever did, the darkest thought I ever had. You said you would stand by me through anything. This Blair, is anything.
Blair: [crying] I never thought that the worst thing you did would be to me.
Chuck: You went up there on your own. [Blair slaps Chuck]
Blair: Goodbye Chuck.