08/13/2009 05:12 am ET | Updated May 25, 2011

Tony Romo Dumps Jessica Simpson On Her Birthday-Eve

Tony Romo broke up with Jessica Simpson on Thursday, the night before her 29th birthday, a source close to the pop star tells PEOPLE.

"She is heartbroken," says the source. "She loves Tony. But it's been difficult lately. He's busy with his career and she's getting ready to shoot her show (The Price of Beauty). They decided to part ways."

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