<P> As Simpson and Bruckheimer's success grew, so did Simpson's reputation for being a brash "party animal". He had been using cocaine since the 1980s, but increased his usage over the years . His excessive spending (in both films and his personal life) and erratic mood swings caused by his drug use were well known within the Hollywood industry by the 1990s . According to screenwriter James Toback, both David Geffen and Jeffrey Katzenberg had attempted to get Simpson to go to rehab for his drug use . </P> <P> Simpson refused to admit himself into a traditional rehab facility and, in 1995, employed Dr. Stephen Ammerman to help him with his addiction . Ammerman, who had a history of drug abuse himself, believed that in order for Simpson to quit drugs, he had to use other drugs to combat the effects of painful withdrawal symptoms . Ammerman designed what has been described as a "dangerously unorthodox" detox program, which included the use of several medications (including morphine) for Simpson to take at home to kick his drug habit . On August 15, 1995, Ammerman was found dead in the pool house on Simpson's estate . It was later determined that Ammerman died of an accidental overdose of cocaine, Valium, Venlafaxine and morphine . </P> <P> Frustrated with Simpson's escalating drug use and declining work, Jerry Bruckheimer terminated their partnership in December 1995 . The two agreed to finish work on The Rock, which was already in production . The Rock was released after Simpson's death and is dedicated to his memory . </P> <P> Simpson was never married . His personal life has been documented in a number of sources . A chapter in the book You'll Never Make Love in This Town Again (which describes four prostitutes' stories about their sexual encounters with Hollywood celebrities) discusses his preference for S & M . </P>

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