Sebastian Stan shared that he had his first "serious love" while filming Gossip Girl from 2007 to 2011 alongside costar Leighton Meester, who he split with in 2010 following two years of dating.

Though he doesn't directly name his Gossip Girl costar and ex-girlfriend Leighton Meester, the two dated from 2008 to 2010. Stan — who played Carter Baizen on Gossip Girl — appeared in 11 episodes from 2007-2010. He's avoided publicly discussing his relationships over the years, but he spoke highly about Meester during their time together.

Sebastian Stan fondly looked back at a romance during his Gossip Girl era, presumably with ex-girlfriend Leighton Meester. "It was the first time I was in serious love with somebody," Stan, 42, told Variety in an interview published on Thursday,