When it comes to the relationship square dance, stars in Hollywood swap partners at lightning speed. We regular folk remember their first loves, their long marriages and their painful breaksups -- especially when we're reminded of them every time the star has a movie coming out. (I'm talking to you, Jennifer Aniston.) But in between those memorable loves are the forgotten romances that make us giggle. Scroll through and see how many lost loves you remember.
Sandra Bullock had a well-documented breakup with Jesse James, but before that relationship even started, she had some "Crazy, Stupid, Love" with an actor who was so much younger than her that friend Hugh Grant used to call him "the child." Can you guess the guy?