Bradley Cooper, Renée Zellweger Call It Quits

Bradley Cooper may be the star of Limitless, but his relationship with Renée Zellweger has come to an end.

The Hollywood couple has broken up, according to People. The two first met when they worked together on the 2009 film Case 39.

Bradley Cooper's dad dies

Although the pair had been seen together frequently, neither ever confirmed their relationship in interviews, although Cooper, 36, did praise Zellweger, 41, while promoting Case 39. "I can't say enough about her," he said. "I just love her. I [loved] coming to work. I love acting with her. I can learn so much from her."

In January, when Cooper's father died, Zellweger pulled out of the Golden Globe awards, where she was scheduled to present, to be with him.

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Both previously had short-term marriages that each lasted less than six months. Cooper was married to Jennifer Esposito, and Zellweger was married to country singer Kenny Chesney.

Cooper currently stars in Limitless, about a writer who discovers a drug that gives him super-human abilities.