Guys opinion did i deserve what he said?

I had a friends with benefits with a guy for a year on and off. I had been good friends 3 years prior to the hook up part. We started hooking up again after I started leaning on himwhile my dad was dying because his dad had died too around my age( he was 32 I was 24). My dad ped and the night after he got me drunk and we talked about my dad and then we hooked up. Then a few days later I had messaged him and told him (about my ex professing his love to me again right after my dad funeral.. just telling him it confused me). Keep in mind him and I are just friends. He writes back somethign about how stupid I am. then a few days later he starts texting me about what a horrible person I am, telling me I was a effing b****, accused me of sleepign with his gay roomate. I kept telling him to just leave me alone and just let me deal with my dads death... but he kept texting me how horrible a person i was. I am just wondering if I deserved what he said... maybe I did something to hurt him but I never had that intention. I am not sure what I did to make him flip out like that. I just want to know if I should apologize?