That's too bad

Blair: Chuck! Stop! Don't go. Or if you have to leave, let me come with you.

Chuck: I appreciate the concern.

Blair: No. You don't. You don't appreciate anything today. But I don't care. Whatever you're going through, I want to be there for you.

Chuck: We talked about this. You are not my girlfriend.

Blair: But I am me. And you are you. We're Chuck and Blair. Blair and Chuck. The worst thing you've ever done—the darkest thought you've ever had—I will stand by you through anything.

Chuck: And why would you do that?

Blair: Because... I love you.

Chuck: That's too bad.