Every once in a while, we come across a scientific finding that puzzles the crap out of us. This is one of them.
A new scientific theory published in the journal Biological Reviews claims that some women are evolutionarily designed to be "sexually fluid," or switch up whether they're into men, women, or both, because of the polygamous marriages that occurred in societies long ago.
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According to the theory, which was formed by evolutionary psychologist Satoshi Kanazawa, women changed their sexual desires and identities over time from lesbian to bisexual to heterosexual and back again in order to keep the peace with their co-wives in polygamous marriages. The idea is that by getting busy with their sister-wives, they’d reduce the conflict and tension that naturally comes with having several women married to the same guy, while still being able to have babies with their husband.
Kanazawa also argues that his theory helps explain why men are aroused by the idea of lesbian sex, and why women’s periods tend to sync up when they spend a lot of time together.
But, here’s the kicker: Kanazawa says that women may not have sexual orientations the same way that men do. (And other studies have made similar claims.) "Rather than being straight or gay, to whom women are sexually attracted may depend largely on the particular partner, their reproductive status, and other circumstances,” he says.
So basically, women really can’t be straight, gay, or bisexual, according to his theory. We just go with the sexual flow and are attracted to whatever feels right.
So there you have it?