Sure, on Gossip Girl her love interest is played by Ed Westwick but off-screen, Leighton Meester's romance with Sebastian Stan really bummed her out when it hit the skids. OK! GALLERY: THE GOSSIP GIRL GROUP GETS SET IN SCENES In a recent interview with Seventeen, Leighton opened up and indicated the split really hurt mainly because he was the first guy she truly liked. "I've only had one experience where it was really hard and I was really sad when it ended," she said. "But that's what taught me a lot about myself and  love and life - and that's good." Read More >>