Am I wrong for telling my boyfriend I'll leave him if he accuses me of cheating on him or using him one more time?

My boyfriend and I have been together for 2 years. During these 2 years, he's constantly asked me if I'm cheating on him or not, both directly and indirectly, and justifies it by saying that he himself has been in a horrible relationship with his ex and that he has seen his friends getting cheated on. He even says things like, I think u only talk to me because I compliment ur looks otherwise u don't, and I've always controlled the urge to strangle him lol. One day he indirectly said that I'm using him as a time pass, I got mad and told him that if he ever asks something like this ever again, I'll leave him. He then asked how could I say it soo casually and that I can beat him up but not leave. He even said that how can these questions asked because of his "Ptsd" outweigh the good he's done. Am I wrong for giving him this ultimatum of sorts?

Am I wrong for telling my boyfriend I'll leave him if he accuses me of cheating on him or using him one more time?
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