Marc Schaffel

Michael Jackson's ex-wife is set to marry Jackson's former close friend and business associate ... but turns out there's a small problem -- he's already married. Marc Schaffel is engaged to Rowe though a date for the wedding has not been set. Turns out ... Shaffel married model Kerstin Christa…

TMZ was at LAX yesterday when Debbie Rowe and Michael Jackson's former confidante Marc Schaffel boarded an American Airlines flight to Tokyo. The two are tight, and Schaffel apparently still has strong connections to the Jackson family, even though MJ and Schaffel had a major falling out and ended…