Based on research by psychologists, sociologists and sexologists from around the world.  Psychological research has shown that that 1 out of 6 people desire to engage in polyamory: In having an open relationship, in having a ménage a trois, in having a swapping arrangement with another couple, or in engaging in swinging. Why is there so much interest in these things? Research shows that there are sexual disadvantages of monogamy, including lower sexual desire and dysfunction. Recent research has found that women have a greater need than men for novel stimuli in order to maintain sexual arousal, and, without the introduction of new stimuli women’s sexual arousal is likely to diminish. Given that women habituate to their monogamous partners, it is not surprising that research has found that women (and men) in polyamorous relationships report high sexual satisfaction. For women who’ve been with their partners between one and four years, a dive begins — and continues, leaving male desire far higher.  Research shows that polyamorous relationships provide a space for women to exert sexual autonomy without risk of stigmatization.