aitah me ftm14 him "m" 14ftm

I'm dating him I'll just call him M and me SZ M made a joke and hating me when on vrchat it's long distance and it's the easyst way for us to 'see' each other and I asked him to not say that he was already in a bad mode which fair idk why and I know he doesn't like me asking I told him not to make jokes like that because of someone from my past and he said it was stupid I took him that way and it was just a joke here is how it went exactly

Me: Please don't make jokes like that I had and old friend who would say stuff like that to bully me

m: like what, I forgot what I said already And if it bothers you so much I might as well just get off

Me: You where making a joke u didn't like me

M: Not that

m:You took that the wrong way idiot

Me: Iknow just still

M: I meant by you saying you just let a fat one rip it gets annoying after some time tbh and I'm just not in a good mood to be talking about shit like this

Me:Ok sorry

He has never said anything in the past about me over using that joke or anything similar to that if I knew I would have shut up. Was I the ashole and if yes how should I apologize he has been through a lot and I want to be there for him