I had a black female friend who had a huge fantasy of seeing a white woman fucked by a black man--me! We were fucking in her apartment, and her white friend came into the bedroom, stripped and cuddled up next to me. My black female friend slowly backed away, and began watching her white friend and me take a trip around the world! White women will do some things that black women hesitate to do, as it's not their favorite. After watching her white friend with me she began sucking my dick to completion regularly, deep throating, and, with a day or two of notice, prep and give her ass to me. All the things she saw her friend do. So, I wouldn't say we fuck white women or wives differently, but they are often out to live out some of their deepest fantasies and sometimes do things that they don't often do--just for the fun of giving their all to a black man.