Serena van der Woodsen: Blair...
Blair Waldorf: What? You want a lift to JFK?
Serena van der Woodsen: Your mom said you were going to France tonight.
Blair Waldorf: Well, she has a big mouth.
Serena van der Woodsen: B, I'm your best friend. She was shocked I didn't know.
Blair Waldorf: Well, now you do.
Serena van der Woodsen: What I know is how you felt when I left without telling you.
Blair Waldorf: Is there a reason you're here?
Serena van der Woodsen: Stay. Don't let some stupid scandal make you run away like it did me. Like it does everyone in our world.
Blair Waldorf: Everything's horrible. My whole life's falling apart.
Serena van der Woodsen: So rebuild it. You're a Waldorf, remember? People don't tell you who you are, you tell them. Stay and fight. I'll fight with you.
Blair Waldorf: I'm so embarrassed. I'm so...
Serena van der Woodsen: So what? Start over. It can be done. I should know. We'll get through this together.
Blair Waldorf: You promise?
Serena van der Woodsen: Promise.