Gossip Girl Soundtrack 
Episode 19 • Petty In Pink
Louis sends Blair a package; Blair tells Dorota she's going to raid Serena's closet for her date with Louis; Lily shops on-line as Serena, Charlie & Eric return from buying pastries.
The Ting Tings
The Pink Party starts; Serena & Charlie discuss what to do about Dan & Blair; Blair and Louis arrive at the party; Lily tells Rufus she's surprised they moved the event; Blair tells Charlie & Serena they can't see anything about Louis.
Kiss Kiss Kiss
Danica 'The Morning Star' Rozelle
Blair drags Dan away from Charlie; Louis tells Lucien he didn't know Blair would be at the party; Anne tells Lily her 'friends' took pleasure in her downfall.
Two Hours Traffic
Blair tells Dan that he's going to help her fool Louis' handler, Lucien, into thinking they're a couple.
If You Wanna
A Gossip Girl blast about Blair & Dan goes out; Blair confirms the rumor about her relationship with Dan; Serena tells Louis that Blair's been in a secret relationship with Dan for months; Lily leaves the party.
The Asteroids Galaxy Tour
Lily intentionally sets off her ankle monitor to get police to break up The Pink party; Blair asks Eric if he's seen Louis; the police announce the party is over.
We Are Stars
Louis & Blair kiss for the paparazzi; Serena phones Jean-Michele; Dan tells Vanessa they are no longer friends, then he joins Charlie for a drink: Chuck gets an update from his private investigator then watches a video of Avery Thorpe.
C'mon, there's no such thing as a stupid question. Get the ball rolling and be the first.