Gossip Girl II (12)

For the annual Snowflake Ball, Blair and Chuck make a bet that they can find the ideal dates for each other. Aaron's (recurring guest star JOHN PATRICK AMEDORI) ex-girlfriend, Lexi (guest star NATALIE KNEPP), expresses an interest in Dan which, in turn, creates conflicted feelings for Serena. Plus, Nate, Jenny and Vanessa get into a tangled situation that puts their friendships and hearts on the line.