Societal norms

So this article got me thinking:

https://www.nytimes.com/2021/05/20/t-magazine/artist-marriage-albers.html

A lot of what I think about as an artist and an austist, are what is typical or not in different situations.

But it is a given, typically, that we all partner with an individual and then remain monogomous for the duration of the relationship. Perhaps forever.

I don't not agree with this, I am myself in a monogomous relationship and very happy about that.

However, when did this singular rule become the way? It is unspoken that when you look across the animal kingdom, monogomous animal relationships are quite rare? Mostly animals have multiple relationships throughout their lives, so why then do humans pretend to be different?

I think there is a lot to be said for obtaining different things from different relationships. Why else would we require the cultivating of friendships if this were not the case?