How to get a best friend back?

I've got sum friend issues and dont know what to do!!. I have a best mate called GEE and for the last two years we have been like insepereable but now we have made friends with these other two and another three so its like 7 of us. The problem is that I dont really have a best friend anymore because she is better friends with one of the others. I am totally lost and feel really alone at school because I am not sure if the others like me or if I fit in. I dont want to stop hanging around with the others because I will be totally alone but I dont want to just follow them around forever but really be one of the group.OMG it is so frustrating and the fact my old best mate gee is always depressed and moody doesnt help and that she now tells any stories and jokes and secrets and problems to someone else instead of me now gets me down too. Any advice on what to do would be great. Has anyone else ever been in this situation? :-( Thankz

TALK TO HIM OR HER!!!