Oh, there has been a lot of studies on this and the number of people who lie on sexual surveys is really high. It is really hard to say. I mean people think they know how many people actually cheat but a large number of them lie as well. I still think the number is not very high and I have a couple of friends who like me cheat on their husbands with black men. I would think the number is somewhere between 5 and 10% or close to that. It is hard to really have any idea though. People are just not going to be honest about these types of things on surveys.