Reasons why my parents doesn't like him~

I'm not exactly sure what's the reason why my parents doesn't really like him at first. But i think i know why. First, my mom has this hobby of analyzing people and mom said that he's not that good of a person. Second, my dad is very very very very very sure that he just don't worth it. My dad said i should've find someone more than that. Third, after i broke up i had this conflict with 'him' which he turned out to be very mad at me and said rude stuff. Unfortunately, mom had this hobby of sneaking to read my messages and she did read the messages from him. Mom is very very mad at those rude messages and start to dislike him. Plus my mom told my dad. My dad said ''told ya" and i run out of words.

I had said a dozen times to him that i can't date him (specifically him) but he just don't get it. He thought my parents don't allow me to have a boyfriend (which is not true).