It's a fact. Whilst most humans might have an inclination to 'pair bond' many of us also have a roving eye. At a biological level our most successful survival tactic is not - as the church might tell you - remain faithful and worship a deity in the hope of salvation, it is to breed with many partners.
My friend said "My boyfriend doesn't want you to come over. He thinks you're a slut who's just going to jump into bed and have sex with us." I could only assume from this statement that he had mistaken the word 'polyamorist' for 'rapist'.
In trying to fit their round polyamorous selves into a monogamous square hole, they will ultimately fail and repeat a pattern of guilt and self loathing which contributes further to lower their self esteem. Their obvious failures and misery are compounded by the disgust of their peers, parents and often even their friends.
In fact the most successful relationships are those where we can respect and love one another as we truly are. That means loving enough to allow each other to explore the fulfillment of our fundamental needs. It is the ultimate and only way to truly love...
We're talking about plural relationships. It's an act, preference and/or inclination that our society usually doesn't talk about and most of the time condemns outright as 'adulterous'. It's a choice that polarizes and has been described as shameful, abusive and downright disgusting.
In the LGBT community, the sense of change is strong because the dynamics of two people of the same gender trying to have a relationship are inevitably going to be different, and there is, therefore, not real expectation or tradition for homosexual relationships.
The old saying goes that the Devil finds work for idle hands, but he also seems to run an interesting sideline in spicing up long, boring afternoons.