Boyfriend wants me to apologize to his parents for something they didn’t hear?

Me and my boyfriend had a stupid fight today, where he was insulting me several times. Where it escalated was when he told me I was delusional, had a different point of view than everyone else in the world, just over some stupid small fight that doesn’t even make sense. He then told me I was acting like a religious fanatic, and I said “well, you have that in your family so you would know all about that”. Yes, this was EXTREMLY petty and I immediately regretted saying so, I don’t even know why I said that. I think I was just fed up from insults and found the first thing to be rude back about. I am seriously ashamed of my behavior.

Obviously this made him mad, and he ended up raging and giving me the silent treatment. I tried to apologize several times, he told me the only way he’ll forgive me is if I tell his family I said this about them and apologize for it, or I can leave.

I really don’t know what to do, I fucked up. Does anyone have advice?
Boyfriend wants me to apologize to his parents for something they didn’t hear?
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