I think I am??

So I think I am poly but my boyfriend has some heavy jealousy issues. There was another guy a while back that I kinda fell for whilst still with my boyfriend obviously since I’m poly I was able to love them both but my boyfriend got real jealous we were kind of on a break whilst this went on and I got told it was cheating. I still want a poly relationship but my boyfriend wouldn’t allow it with another guy but only another girl just due to jealousy not his sexuality...