This girl made me lose me friends.?

I have been in the same situation..... It sucked a lot. I would just try to talk to the other people in your cl or during recess. It's your choice of what you do mainly just try to get the friendship you had before with them and if it keeps happening then they are not friends worth having. I have dealt with it and it wasn't fun. I had to realize that they weren't really friends they were just people who would only hang out with me because they thought they had to. So just tell them how you feel and like I said if it keeps happening tell them that you are done.