Sebastian Stan fondly looked back at a romance during his Gossip Girl era, presumably with ex-girlfriend Leighton Meester.

Though he doesn't directly name his Gossip Girl costar and ex-girlfriend Leighton Meester, the two dated from 2008 to 2010.

Sebastian Stan shared that he had his first "serious love" while filming Gossip Girl from 2007 to 2011 alongside costar ...

In an interview with Variety, Sebastian Stan took a look back at his time starring in "Gossip Girl," revealing that he was ...

Spotted sporting Rigash’s Black Quilted Leather Skirt and Top, Meester looked every bit a beauty.

Sebastian Stan is making a romantic confession about his major love interest during his time on Gossip Girl.During an ...

It looks like Sebastian Stan meant every one of his xoxos to Leighton Meester. The Gossip Girl alum revealed that he feels particularly nostalgic about his role as Carter Braizen on the CW series from ...

Gigi Hadid took a page out Blair Waldorf's fashion playbook and wore a pair of sheer red tights on the Versace runway during ...

As a reminder, Meester went on to marry her husband Adam Brody in 2014 and together they share a daughter Arlo Day, 7, and a ...

Adam Brody, my teenage crush from The O.C., recently talked about his marriage to my teenage hero, Leighton Meester from ...

The Secret Lives of Mormon Wives' star Mikayla Matthews talks with PEOPLE about getting compared to a famous 'Gossip Girl' actress.