You are barking up the wrong tree. If you have to beg now, there will be no sex after marriage. Some women like sex. Most women like sex. They fantacize about it, they do things to make it happen. Go find one of these women. She says you are a typical horny man? Go find a typical horny woman. You know why it's typical? Because it is the norm. You are not going to change her. You might get her to hide her true colors for a while, but you won't change her. The best time to get a divorce is before the marriage.