Counseling or psychotherapy that focuses on the interactions between two people in a long-term relationship. Also known as marital therapy or marriage therapy, couples therapy is used for married couples, homosexual partners, and unmarried heterosexual couples. Common reasons for entering into couples therapy include feelings of being unloved, criticized, constantly belittled, or neglected in the relationship. Concern about incompatibility and complaints about sex are also common. Couples therapy is sometimes used when a family problem, such as an emotional disturbance in a child, can be traced to emotional upset between the adult partners.