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Throuple
A throuple is a committed romantic and sexual relationship among three people, where all three partners are involved with each other, not just paired off in a V shape.
Why readers love it
Readers drawn to throuples enjoy the expanded emotional and physical dynamics, the negotiation of jealousy and intimacy, and the fantasy of a stable relationship that defies monogamous norms with everyone getting their needs met.
Also called
triad
polyamorous trio
MMF throuple
FFM throuple
closed triad