Gossip Girl co-stars Blake Lively and Penn Badgley dated for three years, but the mature and professional pair never let their relationship ups and downs affect their work. OK! GALLERY: BLAKE LIVELY STUNS AT GUCCI PREMIERE FRAGRANCE LAUNCH IN VENICE When they eventually called it quits in 2010, the duo marched on as Dan Humphrey and Serena van der Woodsen on the CW hit and looked chummy today in NYC between takes where the cast is finishing up filming the ... Read More >>