The material on the history of marriage that has been written by Stephanie Coontz makes it clear that expecting emotional closeness and affection in a marriage is a relatively new phenomenon and is related to western economies having accrued enough resources so that marriage is about other variables than having enough to eat or having children to work the land. Tying marriage to love in the twentieth century increased the divorce rate and the lack of stability of marriage. We are now far enough in the process of studying this new kind of marriage to have some data on what makes marriages work...