How to get my friends back?

I know this is long, but please read&try to help me!
well in 6th grade [im in 8th now] I really wanted to be friends with this girl kim, we later became best friends in 7th. then this whole thing came about and we stoped being friends again, long story...

short she's a bi tch. so this year we have a lot of classes together so we started hanging out again, after about two weeks we became best friends again. I knew it was risky but I really thought she changed. we went to the movies one night with my best friend hannah, me, her and hannahs friends from a different town[my best friend hannah really wanted me to meet them] so me&kim&hannahs friends became pretty close. then kim was being a bi tch and me&my friend hannah thought we should just warn out friends about what she did to us. so we did and for some strange reason they told kim that we talked about her. she got really mad and some how convienced our friends from another town that we were lieing and we are just jealous of her. now our friends hate us and so does kim, and her friends. so it's basically imposible to go to school without being talked about. me and my friend hannah went to school one day and NO ONE talked to us, only about us. so we told our parents we were sick and havent gone to school since[it's been two days] I really want my friends back but I really don't know what to do! please please help! thanks!!!

dont worry bout them.
its their loss.
next thing you know ull are going to be friends again.
I've learned from expirience.
if its doesnt get any better tell them srry.
if they donnt accpet it.
just dont worry.