While trying to cope with the pain of knowing that their partners have cheated, victims of infidelity have to wrestle with two big questions: whether to stay in the relationship and, if they do stay, how to best prevent experiencing this kind of hurt ever again. In this book, two relationship experts offer a new way of understanding the causes and types of infidelity and innovative new ways to "affair-proof" recovered or new relationships. The book begins with an overview of the phenomenon of infidelity and the way a long-term relationship develops over times. The book develops a three-type model of intimacy and infidelity and analyzes each. The authors include a discussion of how to evaluate a relationship for infidelity risks and how to choose a partner that is less likely to be unfaithful.