Blair is haunted by Chuck's genuine stream of apologies from last week, and after one of her classic dream sequences, she has to figure out a way to prove that he hasn't turned over a new leaf. Chuck's really trying to be a good guy, but Blair finally gets her chance at the Sleep No More benefit Chuck is putting on. She gets him alone in a room and gets close, tempting him, and Chuck can't resist. He kisses her, and Blair takes it as a victory that Chuck is not a better person. All it proved to me is that there's still a ton of passion there. But the kiss is really a reflection of Chuck trying to be good, so Blair can move on from him, thinking Louis is the better man.