It started with her seeing BBC porn and she liked it so much that she masturbated and confessed it to me later. She really felt guilty but I told her it was fine. Then I bought a BBC dildo that was 8 inches. She wasn't interested in that for a few months and then one day she brought it out. That was what got her to want the real thing. It only happened once, but my wife was fucked by a black man with an 8 inch cock and he inseminated her. Though it only happened once, we get a lot of mileage out of it. lol