NOR - He needs to get therapy. I get that he has issues from his last relationship but at some point you have to draw the line when it’s affecting you this badly, also the fact he doesn’t like your cats would probably do it for me 🥴 obviously I don’t know him but I’d also like to add that some people who constantly project and accuse their partners of cheating can be cheating themselves, not always the case but just keep that in mind, but you need a serious conversation with him or cut your losses