From his first “serious love” with Gossip Girl co-star Leighton Meester to his budding romance with Annabelle Wallis, Sebastian Stan’s relationship history is full of captivating chapters.

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.

‘Pick Someone Good’ Adam Brody Says He and Wife Leighton Meester Have a 'Very Honest' Approach to Parenting: 'For Better or Worse' Sebastian Stan Hints Gossip Girl Costar Leighton Meester Was ...

Sebastian Stan Hints Gossip Girl Costar Leighton Meester Was His First 'Serious Love': 'Life Seemed Simpler' See The Apprentice Cast Side-by-Side with the Real-Life People They Play (Including ...