Honesty and communication are the two biggest requirements. If you think about this, it covers what is happening to your family member's relationships. They were not honest with themselves or their partners, and failed to communicate this. Too many times people are in a rush to find a mate without thinking of the consequences of that. It takes more than attraction, lust, money to make a relationship. Many people would be better off staying players. Unfortunately, players often conceal their real intentions to gain sexual favors.