Bobby Brown classes it up, blames Whitney for crack use.

In his upcoming autobiography, Brown blows the lid on his wildly dysfunctional marriage to the troubled, Grammy-winning diva, suggesting that she drove him into a nightmare of drug addiction.

"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 writes in "Bobby Brown: The Truth, the Whole Truth and Nothing But," out next month. "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."

But Brown notes that he was no saint in their relationship, confessing in his book, "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."

One of his most public indiscretions was an affair with former exotic dancer Karrine "Superhead" Steffans. "Yes, I've slept with her," he confesses. "Yes, I've spent several nights at her house. But she was only good for what her nickname stood for.