Nonmonogamy is a blanket term covering several different types of interpersonal relationship in which some or all participants have multiple marital, sexual, and/or romantic partners. This can be contrasted with its opposite which is monogamy and yet may arise from the same Psychology of Monogamy. Forms of nonmonogamy include: consensual nonmonogamy, in which a nonmonogamous relationship is formed by mutual consent of those involved casual relationship a physical and emotional relationship bet… (More on Nonmonogamy)