Get on your bike and ride Lance Armstrong. Has the Tour de France champ bailed on Sheryl Crow? That's what one gossip columnist says.

Have they split?

Ted Casablanca says that word is that Lance gave Sheryl the heave-ho right before Christmas. Yikes.

The Awful Truth:

"He was a cad," remarked one of Lance's relatives, regarding the seven-time Tour de France winner's reported dumping of glitzy rocker-babe Crow.

"And Lance's family is trying to get him to change his mind; that's why [the news] hasn't gotten out yet."

I do not, at this point, know the reason for the supposed split. But let's get real.

Everybody knows Mr. A., noble cancer survivor he may be, not only busted up with S.C. a time or two before, he also left his wife and young family before hooking up with Crow.

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Reps for both celebs did not comment. That can't be good.

-- Jennifer Cox