Some folks just can't settle down. Here are the serial daters of 2011: The celebs that hooked up with the most people!
After splitting with Penn Badgely in late 2010, Blake Lively took a tour of Hollywood's hunks. After a summer of romance with Leonardo DiCaprio, she hit it off with Green Lantern co-star Ryan Reynolds.
Ryan Reynolds was no slouch, either. Rumors said he hooked up with Sandra Bullock, but he is currently going stroke with Blake Lively.