Eternal triangle "In geometric terms, the eternal triangle can be represented as comprising three points – a jealous mate (A) in a relationship with an unfaithful partner (B) who has a lover (C) ... A feels
abandoned, B is
between two mates, and C is a
catalyst for crisis in the union A-B".
Homosociality It has been suggested that if men "share a sense of brotherhood and they allow a woman into their relationship, an
isosceles triangle is created" automatically, as "in
Truffaut's film
Jules et Jim.
René Girard has explored the role of envy and
mimetic desire in such relationships, arguing that often the situation "subordinates a desired
something to the
someone who enjoys a privileged relationship with it". In such cases, 'it cannot be fair to blame the quarrel of the mimetic twins on a woman. ... She is their common scapegoat'. As to gender responsibility, evidence would seem to indicate that in
late modernity both sexes may equally well play the part of the "Other Person" – that "men and women love with equivalent passion as well as folly" and that certainly there is nothing to "suggest that a man is better able to control himself in a love triangle than a woman". Stereotypically, the person at the center of a rivalrous love triangle is a woman, whereas for a split-object love triangle it is a man, due to the same reasons that
polygyny is far more common than
polyandry.
Distinction A love triangle should not be confused with a
ménage à trois, a three-way relationship in which either all members are romantically involved with each other, or one member has relations with two others who are reconciled to the situation instead of being in conflict. Ménage à trois is French and directly translates to "household for three" meaning it is usually composed of a "married couple and a lover ... who live together while sharing sexual relations". This differs from a love triangle because each participant is equally motivated purely by sexual desires. The ménage à trois may be considered a subset of "The Sandwich ... a straight three-handed operation ... which may be operated with any assortment of sexes: three men, three women, two men and a woman (
Ménage à trois), or two women and a man ('The Tourist Sandwich')". ==In entertainment==