Pink and her husband of two years, motorcross racer Carey Hart are heading for divorce, say sources close to the couple.

A new report claims that Pink initially agreed to an open marriage – but is now having second thoughts.

According to the New York Daily News, the singer took a "Don't ask, don't tell" approach to the union so that her biker boy could have his fun when she's away on tour.

But apparently she's changed her mind about the arrangement now that her biological clock has started ticking.

"Divorce is just around the corner," says their mole. "Carey has this one blond in particular that he takes everywhere, even public appearances. But Pink knew what she was getting into!"

Reports that the marriage is in trouble have been circulating for some time.

Last month a friend close close to the singer reportedly told Us magazine: “Carey is tired of her always accusing him of cheating, and he’s fed up with the constant arguing.

“He says he cannot deal with her anymore. It’s his decision to put an end to this. They are 100 percent getting a divorce.”

However, Pink’s rep rubbished the reports, calling them “complete bullshit”.