Just one day before her birthday, and just weeks before Dallas Cowboys training camp starts, sounds like a business decision to me. With Terrell Owens gone Romo doesnt have any more excuses not to win.

According to several online reports, Jessica Simpson and Dallas Cowboys quarterback Tony Romo have split up. Sources said the split happened on Thursday, a day before Simpson's 29th birthday.

"She is heartbroken," a source told People.com. "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,' for VH1]. They decided to part ways."

When asked for confirmation by MTV News, a rep for Simpson would neither confirm nor deny the reports, saying, "We don't comment on our clients' personal lives."

People.com also reported that on Simpson's birthday, Romo was seen partying at Los Angeles nightclub My House. "He had quite a few girls stop by his dance floor table," another source told the site. "Romo was sipping Grey Goose and having a fun time with the boys."

UsMagazine.com also reported that the couple have split, citing a source as saying, "It's been a long time coming." An additional source told the site that the couple could reunite at any time. "They go from one fight right into another, without a second's break. It's always something with Jessica."