"Gossip Girl" co-stars Blake Lively and Penn Badgley had been claiming for months that nothing was going on between them, before they finally showed up together at the 2008 Met Costume Institute Gala. Soon after they were photographed kissing in Cancun and began publicly dating. They parted ways in September of 2010.
In late 2007, rumors circulated that Badgley was dating his Gossip Girl co-star Blake Lively. In May 2008, after People magazine published photos of the two kissing while on vacation in Mexico, they became more open about their relationship. Badgley and Lively ended their three-year relationship in mid-September 2010.