Jessica Simpson's rep still denying Tony Romo split rumors

Jessica Simpson's reps are still denying reports the former Newly Weds star has split from beau Tony Romo.

"Not true, not true," Simpson's rep tells E! Online. "I spoke to Jess yesterday and the day before. They are still together."

And in fact, to prove they're still together, Romo will be Jessica's date at her sister Ashlee's wedding to Pete Wentz this weekend.

And addressing the photos of the Dallas Cowboys quarterback partying in the Windy City with a mystery blonde, a source says the young woman in question has a serious boyfriend: "She’s a doll and they did have fun at the club, but nothing happened with Tony!"