After years of lurid tabloid headlines, nobody expected their divorce to end cleanly, but the breakup of Bobby Brown and Whitney Houston took an unexpected turn on Thursday (April 3) when Brown revealed that his upcoming autobiography will contain claims that Houston introduced him to hard drugs.

"I never used cocaine until after I met Whitney. Before then, I had experimented with other drugs, but marijuana was my drug of choice," Brown reportedly writes in "Bobby Brown: The Truth, the Whole Truth and Nothing But," which is due out next month, according to the New York Post. "At one point in my life, I used drugs uncontrollably. I was using everything I could get my hands on, from cocaine to heroin, weed and cooked cocaine."

Brown reportedly says in the book that the two stars' 15-year marriage was doomed from the start. "Within the first year, we separated, with several more to follow," Brown says. "I think we got married for all the wrong reasons. Now, I realize Whitney had a different agenda than I did when we got married. ... I believe her agenda was to clean up her image, while mine was to be loved and have children." The book reportedly contains allegations that part of the reason Houston married bad-boy singer Brown, a former member of New Edition and onetime solo star, was that she was under pressure to mute tabloid rumors that she was having a lesbian affair with her assistant.

"The media was accusing her of having a bisexual relationship with her assistant, Robin Crawford," Brown reportedly writes. "Since she was the American Sweetheart and all, that didn't go too well with her image. ... In Whitney's situation, the only solution was to get married and have kids. That would kill all speculation, whether it was true or not. In the short, I think I got caught up in the politics and ended up marrying one of the biggest stars in the world."

Houston's spokesperson, Nancy Seltzer, would not comment specifically on the allegations in the book, but said in a statement, "Miss Houston is sad that Bobby feels he needs to say such things, but she chooses to take the high road and will not speak badly about the father of her child, even if it's to set the record straight."

The couple, who married in 1992 and divorced last year, have a 15-year-old daughter, Bobbi Kristina.

The Post reported that in addition to painting a grim picture of Houston and their marriage, the oft-arrested Brown, 39, admits that he too was to blame for their messy breakup and that he was often unfaithful to his ex-wife. "I am guilty of sleeping with other women. ... Women are always throwing themselves at you. I'm only human, so I would make the mistake and bite the hook sometimes. ... I let the testosterone take over," he writes.

The autobiography's promotional materials -- which claim that Brown dated Madonna and Janet Jackson, in addition to sleeping with "thousands of women" -- say that the book "sets the record straight, proving that there are two sides to every story. ... Responding to a media that paints a negative depiction of his life, Bobby takes you on an emotional journey as he fully exposes himself in this tell-all, in-depth story of his many triumphs, trials and tribulations. Hear true confessions of drug addictions, a life-threatening drug overdose, the real reason he left New Edition and intimate stories of his relationship with Whitney Houston."

The book promises to teach "many valuable lessons" and show the consequences and pressures of fame, along with telling the "timeless" story of how Brown "refused to let his future be affected by the mistakes of his past."