Writing

I've had a very big problem. My father Miquel met my girlfriend a month ago and the talked about me. My father thinks that my girlfriend is a bad influence on me and he doesn't want to see her any more.
I'm angry because my parents don't know my girlfriend and they can't give an opinion. My solution is that my parents don't interfere in that situation because it's my life.
I don't know! I'd really like some advice because if I don't do something soon, I'll probably lose my girlfriend.