I had a friend of mine, who is very dear to me ,but i found it out that she just used me,and now?

she is saying to me,that i am out of her life,i am nt her friend any more,i am very up set, she came in my life soooooooo deeply,and gone so unkindly,its upsetting to accept her nt as friend(WE BOTH R FEMALE)i feel kind of insult,shame,rejection,so to hide it i still waste my time and things on her,she talk to me very politically,ithink she wantsto keep me for her rainy dayz,she dnt care for me , she knws how much i love her she dnt send me msg ,no msn, no calls,its me all the time sending her mails , msges,i invited her for diner tomarow, why i am so crazy for her, why cant i leave her,she nws all abt me, plz let me knw how can i change my self,i told her all abt my feelings,she is nt acknowledging them,plz help me in ignoring her, how can i be like her,how can i talk to her politically???