Romantic jealousy is often experienced after a situation is interpreted as threatening to one's intimate relationship and can involve elements of other emotions such as anger, fear, and sadness. An individual experiencing jealousy may engage in a number of behaviors and thought processes aimed at reducing jealousy or keeping the relationship intact. However, these cognitions and behaviors may not achieve either of these goals and may escalate problems in the relationship. We review the theoretical and empirical jealousy literature and integrate the research findings with existing models of couple therapy. Assessment and treatment guidelines are offered on the basis of theory, research, and clinical practice. Future research directions are also discussed.