What is friendship?

Your best friends for 11 years then one day it comes to an end
she thinks that she is all you have and she can use you all she wants
she ditches you for someone else then when shes done with them wants you to just be there waiting for her
she talks about making out with 10 ppl in one day and then tells you your a WH**E
Youve been taking her crap for almost a year
Now you realize that your facing your fear
you didn't want to lose your best friend but now that shes gone you feel better.
you realize that this friendship is done
at first you have problems dealing but then you realize you are better off without her.
WHAT IS A FRIEND ANYMORE?