Badgley shared his thoughts on his former "Gossip Girl" co-stars, including ex Blake Lively and the late Michelle Trachtenberg.

Penn Badgley started working as a child actor at 12. He said on "Call Her Daddy" he felt tired and dried up when he was cast in "Gossip Girl" at 20.

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.