Tony Romo reportedly split with Jessica Simpson the night before her 29th birthday.

Sources tell ET that the couple broke up on July 9, which resulted in her canceling her party.

Meanwhile, an unnamed source also tells People, "She loves Tony. But it's been difficult lately. He's busy with his career and she's getting ready to shoot her show. They decided to part ways."

On Friday, Jessica's birthday, Tony enjoyed a guys' night out with a large posse of friends at Hollywood hotspot MyHouse.

"He had quite a few girls stop by his dance floor table," one onlooker told People. "Romo was sipping Grey Goose and having a fun time with the boys."