Not just you (much to the chagrin of mods in some game threads...lol) but you can't simply make up your own definitions when said genres already have their own. I suggest checking the tags thread to see how everything is tagged here.
My defintion in this case only applies to how i would behave in a relationship, it has nothing to do with how the game is classified on here, thats why I dont really mind if people have a different way of seeing it. I get that the actual (real) definition isn't mine, its just how I see it. I would be salty af if my significant other was trying to get extra people in our relationship, thats mainly what i meant lol.
I probably try to immerse myself and my views into a porn game way too much though