Why does it happen

I don’t know why but I get soo scared of my boyfriend when he’s angry and says I don’t love him etc. 😭 I even shake and cry, anyone else?

Edit: hes stubborn and can stay mad atleast for two days, he’s never raised a hand to me, this happens around twice every 3 month...most of the time it’s because I’m too tired to have sex (it’s been a week since last time) but he works all the time and it’s difficult to fit it in and he always wants it at the wrong time when I’m too tired or not in a good enough mood (lost my close brother in March) I don’t understand and he won’t talk...we’ve been together just over 3 year.

My ex raised his hand to me once and grabbed me by the arm...I left him after that, my grandma had an abusive marriage and my mam and dad also had an abusive relationship. I don’t know if I’m scared incase one day he does raise a hand to me...