Inside The Houston - Brown Split

Not surprisingly, but communication, cheating and drugs are all causes that are being attributed to the end of Whitney Houston's marriage to Bobby Brown. Here are the details:

• A relative of Brown's says the problems started last fall. "The relationship just spiraled out of control," the relative tells PEOPLE in its new issue. "They fought like cats and dogs. They would fight about what to eat for dinner, about who wasn't cleaning out the dishwasher. Stupid things. But they were always yelling."




• Things took a more serious turn in March when Brown's sister Tina told The National Enquirer that Houston was a drug addict.




• Another source says the "final straws" involved recent tabloid reports that Brown, the target of persistent cheating rumors, has been carrying on a longtime affair with Karrine Steffans, who claimed Brown as one of her conquests in her 2005 kiss-and-tell book Confessions of a Video Vixen.(source)