Relationship 'Hangover': Bradley Cooper and Renee Zellweger Split

I guess their love wasn't "Limitless." Right? Am I right?

Sorry about that.

Nice-to-look-at Hollywood couple Bradley Cooper and Renée Zellweger have split after a two-year relationship. The two met while filming "Case 39" and became romantically involved (officially, at least) around the time of the movie's release in 2009. Cooper, 41, had been married briefly to actress Jennifer Esposito and Zellweger, 36, was previously married to country singer Kenny Chesney.

The two never officially confirmed their relationship, and in fact Cooper refused to talk about it when asked by Howard Stern earlier this week. "I just don't talk about it," said Cooper.

That was all a matter of personal privacy, though, as the two were seen together often and moved in together last year.

Eyebrows were raised when Cooper and Zellweger both attended the same pre-Oscar party last month but didn't spend any time with each other.

Zellweger, famous for her roles in "Chicago" and "Bridget Jones' Diary," starred in the film "My Own Love Song" last year. Cooper's fame skyrocketed when he starred in "The Hangover," and has since starred in big films like "Valentine's Day" and "The A-Team." Cooper's newest project, "Limitless" releases this weekend, pre-production has begun for "The Hangover Part II."