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.
PolyFamilies Blanket term Plaçage The Ethical Slut Open relationship Group marriage Psychology of monogamy Polyfidelity Open marriage Casual relationship Polyandry Ménage à trois Infidelity Polygyny Orgy Affair Swinging Group sex Promiscuity Romance (love) Plural marriage Interpersonal relationship Monogamy Polyamory Polygamy Human sexuality The Church of Jesus Christ of Latter-day Saints Marriage
