It is very complex when you get into different psychologies, especially female psychology, but basically I would ask every man to look inward to the realsitic effects of his actions when he is having a sexual relationship with a woman. What you can go to sleep with a pure conscience might be much different than me. However, you have already heard my opinion of sex before marriage, and I believe that it also is the general opinion of born again, fundamentalist Christians. As I said, I would not hate a person for doing it, because I did it myself, but I honestly believe it is destructive, and it ruins a lot of people's lives.