I don't like it how it was in the old days, with wives being like trophies to the husbands. But as long as they all love the same person, and they're all fine with it, it's the same theory: Love is Love. Also, there's a difference between cheating and being polyamorous.
Thing is, who wants to share a husband? There's plenty for everyone (it will always be a guy with many wives that's debated, a woman with many husbands would probably be considered either a goldigger or a slut
But as long as they all love the same person, and they're all fine with it, it's the same theory: Love is Love.
Also, there's a difference between cheating and being polyamorous.