Polyamory and being attracted to multiple people are not the same thing. Polyamory is romantic (and usually sexual) love for multiple people at once.

That’s not the same as adultery where the cheater usually has fallen out of love and lust with their partner and into love with someone else.

It’s also not the same as swinging where there is one main relationship but some casual sexual fun with like-minded people that doesn’t fall into the category of “multiple romantic relationships at once".

It’s also not the same as an open relationship where casual sex is allowed but romance is not.

And it’s the not the same thing as someone in a monogamous relationship fantasising about theeesomes or hot celebrities while masturbating.

Another thing — cuckolding, breeding kink and femdom are common fetishes yes, but they are by no means the most popular kinks. Actually D/s is FAR more commonly male Dom/female sub dynamics. This is borne out on sites like FetLife as well as various surveys.