The couple met on the set of the film "Case 39" in 2006, but didn't begin their relationship until three years later.
In the interim, both had short marriages - Cooper to actress Jennifer Esposito, and Zellweger to country singer Kenny Chesney. The two were first photographed together in July 2009, while dining in New York, Us magazine reports.
Not surprisingly, the couple is constantly plagued with rumors, including a potential split, followed by reports that they’re now living together.
Could Irina Shayk be the woman who finally makes Bradley Cooper settle down for good?
Bradley Cooper and Isabella Brewster, the younger sister of star Jordana Brewster, were spotted on several dates together, but it seems their budding relationship quickly fizzled out.
3) Renee Zellweger: Cooper and Zellweger starred alongside each other in the 2009 thriller flick .
After that, they were spotted in Spain and Cooper's hometown of Philadelphia in August. I can learn so much from her." "He's a great actor, great actor," she said in the same interview.
The two have rarely spoken publicly about their romance, but Cooper gushed about working with Zellweger to Entertainment Tonight last fall. "I just got so excited, not believing that I was going to go to work with him." Speculation about the couple's relationship caught fire back in February when they each attended a pre-Oscar party but didn't hang out together, according to multiple reports.
They reportedly started dating last year, a month after he split from Suki Waterhouse and three months after she split from her long-time boyfriend, soccer star Cristiano Ronaldo.
So far their relationship seems to be going strong.
Actors Bradley Cooper and Renee Zellweger have called it quits, multiple media outlets reported on March 18, 2011.
The pair met in 2006 on the set of their film "Case 39," but didn't begin dating until 2009.
1) Jennifer Esposito: Not only did Bradley Cooper date Jennifer Esposito, but he also married the actress in 2006.