Do I have true friends?

It seems that my friends are cool when I first meet them but as soon as we get to know each other more, they become the total opposite of what I thought. As far back as I can think my friends were always sort of mean and uncaring. Some of my friends were jealous when I would hang out with someone else and try to ostracize me. Sometimes even take sides if I got into a fight with one of them. They would try to control me. Then sometimes me and my one friend would fight over the most pettiest stuff and she would go for low blows. Now I'm in high school and i don't have as much friends as I use to. But the few that I have, I'm not sure . It seems one of them are friends with me only when their other friends aren't around. And the other one is becoming rude and try to talk about me. Like now she is trying to say I'm fat when I'm not. I do have a little bulge of a belly but I'm 5'3' and 136 pounds. She has friends that are twice the size as me but she wants to talk about me. Anyways sorry for the story, but what do you think? Are these true friends? P.S I do have stuff in common with them and I do like them. I just wonder why my friends always treat me like crap. I don't do that to them and if I do I apologize. But they don't care!