Superstar Whitney Houston and fallen R+B singer Bobby Brown's 14-year marriage is reportedly on the rocks, with the couple planning to divorce.

The New York Daily News reports the MY PREROGATIVE singer, 36, has been telling friends and acquaintances he is divorcing Houston, 42, after an infamously tumultuous marriage.

Earlier this month (07-08JAN06), the former New Edition bandmember was reportedly seen flirting with a group of beauties backstage at an all-star concert featuring R+B groups SWV, GUY and Blackstreet at the Foxwoods Casino in Mashantucket, Connecticut.

A backstage source tells the Daily News, "While flirting with a bunch of women, they asked, 'What's up with your wife?' Bobby said, 'We ain't together no more. We're getting a divorce.'"

The couple are frequently at the centre of tabloid stories about their admitted drug and alcohol battles and in December 2003, Brown was arrested on charges of misdemeanour battery against Houston in their Georgia home.

The couple have one child together - daughter Bobbi Kristina, 12.