Polyamorous or just not sure?

[J-Go]

I think it´s cultural teaching.
The ancient Greeks accepted homosexuality (between men, I don´t know about the women) as a fact of daily life.

Kings had harems. I doubt they only loved / felt great affection for only their queen / main wife.

There were tribes of natives, e. g. American natives, where a man could marry more than one woman. This was accepted there, too.

In the Muslim world or with the Mormons, a man is allowed to marry more than one woman.

(I cannot help but wonder why there is no model of a one-woman-several-men marriage anywhere, but nevermind.)

Actually it's called Polyandry, and there have been cultures (Tibet and Mongolia to name a couple) in which a woman would take on more than one husband. Generally a woman married sibling brothers in a family and would serve all males in the family as if they were her husband. Not really a great deal for the woman, for the most part she simply filled the role as slave and sexual release to the family. Not much amorous about that!

Anyway I think you make a good point, it is cultural which really translates to what we are used to. Again it comes down to choice...what drives your moral compus. I can be a jealous ass, I don't really ponder where that comes from I just know it when I feel it. I don't really care for the feeling so try, best I can to stay away from situations that would invoke that feeling. The thought of my love giving what she has granted me to another would be more pain than I could take.