Diddy has been sued by a fourth accuser, who claims that the rap mogul, ex-Bad Boy president Harve Pierre, and an unidentified man took turns raping her in 2003 when she was in 11th grade after she was trafficked across state lines. In the explosive lawsuit filed on Wednesday and obtained by RadarOnline.com, Jane Doe claimed that she met Pierre and the “third assailant” at a lounge in Detriot, with the record label CEO name-dropping Diddy by claiming they were “best friends.” Pierre allegedly called Diddy, who she claimed convinced her to accompany the record label executive and the unidentifi…