Penn Badgley is opening up about the challenges of dating his "Gossip Girl" co-star Blake Lively while working on the hit series. Badgley, who played Dan Humphrey, dated Lively, who played Serena van der Woodsen, from 2007 to 2010, mirroring their characters' onscreen romance.

Penn Badgley—who shares son James with wife Domino Kirke—reflected on dating Blake Lively on-and-off amid Gossip Girl’s early seasons.

Gossip Girl's Penn Badgley opened up about Blake Lively, on-set parties and his struggles separating himself from Dan Humphrey on 'Call Her Daddy'