This article needs additional citations for verification. (February 2011) (Learn how and when to remove this template message)
A committed relationship is an interpersonal relationship based upon agreed-upon commitment to one another involving love, trust, honesty, openness, or some other behavior. Forms of committed relationships include close friendship, long-term relationships, engagement, marriage, and civil unions.
- Monogamy: having a single long-term sexual partner
- Marriage: a legal and social binding between two people.
- Sexual infidelity: having a sexual relationship without a commitment to have no other sexual partners
- Sexual fidelity: not having other sexual partners other than one's committed partner, even temporarily
- Serial monogamy: having a series of monogamous relationships, one after the other
- Open relationship: a commitment to a partner without excluding other romantic or sexual involvement
- Polygamy: having multiple long-term sexual partners
- Polyandry: having multiple long-term male sexual partners
- Polygyny: having multiple long-term female sexual partners
- Polyamory: encompasses a wide range of relationships; polyamorous relationships may include both committed and casual relationships
- Promiscuity: having casual sexual partners at will (compare with chastity)
- Relationship anarchy: having relationships that develop as an agreement between those involved, rather than according to predetermined rules or norms.