Help please?

well my friend, we were really close during the summer, like staying on the phone til midnight and doing things together, cuz we're best friends. when school started we were kinda close, like on the first day. then on the second day, she became kinda snooty. she has a boyfriend since like last april and they are like husband and wife (we are in middle school people) she still hangs out with the same people, but doesnt really talk to me, or my friend Summer, or my friend Gabriella. we are just kinda hangin there. and today at lunch, her backs were to us, and didnt even talk to us. her friend (also mine) said we were anti-social. she's just really changed, she didnt say bye to us today and she did see us, and she just left a cl without even waiting for us or anything. its just like in school we are not friends, just aquantainces, but afteer school over email and stuff we are best friends. i am nnot even dorky or anyhting, in fact she is the kinda dorky one, (so everyone says) i just