Any advice about my friend?

Me and 0ne 0f my g00d friends have been bffs since kindergarden. We have been in the same cl alm0st every year, and 0n t0p of that we have always hung 0ut t0gether, we even made a pack that we w0uld always be bffs, but n0w she isn't hanging 0ut with me:( She has been hanging 0ut with all 0f my 0ther friends that she wasn't even friends with bef0re....Now I d0n't have any0ne t0 hang0ut with at school. I d0n't even kn0w if I even did anything t0 make her mad..S0metimes she will even call me and say "sup BFF", and I just d0n't know what to do..