Are they back on?

Jessica Simpson was seen having lunch with Tony Romo in L.A. Friday at Katsuya after three weeks of not being photographed together and widespread reports the couple had split.

Columnist Alan Peppard of The Dallas Morning News reported Simpson and Romo were dunzo Thursday.

Despite rep denials, “two people close to Tony and Jess have told me that the glam couple is splitsville, kaput, over, put a fork in it,” Peppard wrote.

Another report in the Chicago Sun-Times said Romo grew tired of Simpson’s increasingly meddlesome father Joe.

Usmagazine.com confirmed that Simpson and Romo had called it quits Friday.

“Tony did dump Jessica,” a source close to the Dallas Cowboys quarterback told Usmagazine.com. “Of course, she’s upset!”

So are they really over?

“He’s broken up with her before, but I don’t know if they’ll get back together this time,” a source tells Us.

Romo could be in town for Ashlee Simpson’s wedding to Pete Wentz on Saturday.

“Joe has called Tony and asked him to come to show support for the wedding,” a source told Us.

Though on Monday of this week, Simpson’s rep denied a split, her PR people have remained silent all week on the couple’s status. Pictures of Romo partying with a Jessica look-a-like did not help matters

The newest issue of Us Weekly, on newsstands now, reports that the day Simpson’s ex John Mayer and Jennifer Aniston went public as a couple, she went on a four-hour drinking binge that left her so out of it, she had to call her mom for a ride home!

“This Jen and John Mayer thing is eating her up, and she just can’t handle it — and Tony has basically had enough,” a Simpson pal told Us. “She’s too much to handle.”