What is an affair? Must an affair involve sexual intercourse? What about a kiss? What about pornography? While almost everyone would feel betrayed if a partner had sexual intercourse with a third person, other amorous, intimate behaviors can be equally destructive—dinner with an old girlfriend, for instance, or flirting in online chat rooms. All of these behaviors may constitute a betrayal of trust. An affair is a violation of trust that destroys the fundamental beliefs that the hurt partner had about the unfaithful spouse and the relationship.