Disagreement

So me and my best friend ( I'm a girl and he's gay) have a disagreement. I believe that everyone discriminates against each other. That means including gays discriminating against straights and straights discriminating against gays. He does not believe that gays discriminate against straights at all. He only thinks that straights are the ones discriminating. This is like saying only women discriminate against men, right? I just wanted to know what you all thought about it! No hate, I still love him to death we just tend to have a lot of agree to disagree moments :)