Infidelity, or “cheating,” can be any behavior that promotes intimacy outside of an established exclusive relationship. It is most immediately recognized as physical or sexual contact, but many consider “emotional affairs” to be just as damaging. Infidelity can be a symptom of existing and unresolved problems within a relationship, but it can also occur in otherwise healthy relationships, taking everyone by surprise. Whether or not the result is separation or reconciliation, the betrayal of infidelity can have long-reaching effects, both on each partner and any affected parties—such as children, parents, and close friends—influencing each one’s future interpersonal relationships.