Gossip Girl (2007): Season 4, Episode 8

4 - 8: Juliet Doesn't Live Here Anymore

Serena continues to resist temptation with her professor Colin, while Blair tries to resist temptation with Chuck. Vanessa joins Juliet's scheme to try to bring down Serena with photos taken of her and Colin in a romantic embrace. Nate discovers that Juliet has been lying about where she lives, and that she is poor. Dan realizes that he still has feelings for Serena.