Better watch your back, Ivy! Not only is your ex-boyfriend, Max (Brian J. Smith), conning you out of hundreds of thousands of dollars — he's also dating your (faux) cousin, Serena. Talk about an ex who sticks around just to make your life miserable! Take a look with this sneak peek video of Gossip Girl Season 5, Episode 9: "Rhodes to Perdition"!
Original Air Date: Monday, November 28, 2011, 8/7c