Serena says "I love you" to a stranger. Sort of ruins Dan's big moment in this scene from "A Thin Line Between Chuck and Nate."
Added:
In this clip from an unprecedented Gossip Girl event, Serena has it out with Blair over a rumor that got started... most likely involving Serena being preggers. "A Thin Line Between Chuck and Nate" looks like it will shape up to be a great episode!
Added:
In this clip "A Thin Line Between Chuck and Nate," Dan and Serena enjoy a picnic. She's very cute. So is he. What a great couple. Love the scene.
Added:

Gossip Girl Season 1 Episode 13 Quotes

Eleanor: Are you all right?
Blair: Never been better.
Eleanor: Well, Serena has. What's wrong?
Blair: I don't know. I can't be held responsible for her mood swings.
Eleanor: Were you arguing about the possibility that your condition may have returned.
Blair: No. It hasn't.
Eleanor: I heard you the other day in your bathroom with the water running.
Blair: I'm very stressed. And with you and Serena down my throat I can hardly see straight, never mind keep food down.

I'm not pregnant. I command myself to not be pregnant.

Blair

Gossip Girl Season 1 Episode 13 Music

  Song Artist
Song Got Ur Number Nadia Oh
Song No Happily Never After Nicole Scherzinger
Song The Air We Breathe Figurines