This is very important. Not all women are created equal. To an experienced guy, sometimes no matter how hard you try, you are just not good enough. Remember sexiness is a natural talent, not an act. If you don't have it, then you don't have it.
Using sex as weapon sometimes works on married men as well, especially on those who married their first women. The hard part to find out who is truly having a lousy sex and emotional life (since everybody will tell you that his marriage is hell).
