Which Gossip Girl Star Just Split From Her Boyfriend?

Call it a case of simply moving on, or the end of an era, but it seems like everyone’s reacting to the end of Gossip Girl’s reign in their own way. While blonde beauty Blake Lively (Serena) just tied the knot with Ryan Reynolds, like, five minutes ago, other stars aren’t so lucky in love.

This GG star we love to hate — and would be afraid to run into in a dark alley — just proved that even when summer lovin’ happens so fast, it doesn’t always weather the seasons quite so well.

So, who is it? Click through to find out...