What do you think about polyamory.

Depends. I've been in one polyam relationship. There was so much jealousy and abuse. The dynamic was Him and his his vanilla gf then Him and me as M/s, then her and I had a vanilla bi relationship. He treated me special because of my duties as a slave, but when she became jealous and would berate him he would take his anger at her out physically on me, whether sexually or with his fists. I finally left after she encouraged him to beat me to death when he tricked me into coming over to pick up some of my tools from his apartment. He was arrested shortly after at his work.
My current Dom/husband is nowhere near like him, but poly relationships scare me because they can change people by a lot.