Especially when you know the relationship is leading to marriage. I had a field day discussing this topic with my friends, and some of them agreed that they would stay with their boyfriend and because of love they would find a way to deal with the situation. One of them said she would stay with him as long she is having her kids and there is plenty of money to throw about. Others stated firmly that they would move over to the next guy.
Marriage is a long time investment and two things that keeps a marriage going are sex and money.
The most vital of the two, is sex. If there is no money but the couple's sex life is good then the marriage will survive. If the reverse is the case, I believe that the marriage is doomed. My advice to any women who is not enjoying sex in her marriage is to be patient because when you are newly married you sex life will be great, but with time it becomes boring and less frequent, not because your husband doesn't love you, but because he has so much on his mind. He has to think about work, you and the kids, money, and how to make you comfortable.