Is it normal for a best guy friend to make you feel inferior ?

There is this guy that is my best friends and we are friends with benefits. I never had a problem with him saying that girls were hot or that he would do them. That was until he made a comment that hurt me really bad. On my b-day he made a scene. There was a girl he liked there and he could not accept the fact that she had a boyfriend. They starting argueing so I was getting upset because all I wanted was a drama free birthday for once. Then I just got so upset I screamed and told the girl what should it matter because it is not like she is ugly like me since she got a few guys that want her. This made me feel bad since she has a few guys that want her and I can't even find one. Then my best friend said that if any guy would be dumb to think that. Yet what he said next made me feel like he just told himself he is dumb because he said if that girl was not there he would have sex with me. That got me more upset because that made me feel like I did not compare to this girl and that I am a last resort. Then I felt worse because he said my friends would have sex with me. So that got me more upset because lets face it guys use girls for sex so what does that have to do with me to cheer me up. That just makes it seem like he thinks that is all I am good for. Now when I see this girl and talk to her I feel that I am worthless that no guy in his right mind would go out with me unless I looked like her. what should I do? We are also in our early twenties.