consensual non-monogamy
a form of romantic relationship configuration where all partners involved agree to engage in romantic and/or sexual relationships with other peoplel; this includes (but is not limited to): polyamory (partners involved agree on loving sexual and romantic relationships with others), swinging (partners agree on sexual relationships with others, typically engaged in as a couple and often at parties) and open relationships (partners agree on sexual engagements with others, typically with the expectation that love is not part of the equation)