I learned Buddhism and met a boyfriend. He doesn't believe in anything. He is very evil and selfish. He kills, drinks, eats meat and curses. Everything is not good.

This is the nature of many people, but it is not selfish or evil to the extreme, but it is really normal. Moreover, it is normal for people to eat meat and drink, and some people call names. If you don't like it, choose to stay away. If you don't agree, you won't find the other person pleasing to the eye.