How do i stop being so annoyed and hurt?

im lesbian and i told one of my friends. it seemed like she was ok with it and then started to push me away. people said she was talking about me behind my back. i didnt realize that it was about me being gay. she had been treating me badly for a while and i was annoyed because everyone sees her as being so innocent and perfect. i basically just asked her if something was wrong and she said no. my friends who i trust very much told me that she said i had a crush on her and several of my other friends. that hurt a lot. i have only had a crush on 3 girls in my life. i understand that some people are homophobic and thats ok. i completely understand. i would just be willing to back off and avoid hem so they wouldnt be uncomfortable. she told someone all of the things that are going on in my life and made up a bunch of stuff. i get a lot of crap about it from people even though i did nothing wrong. i assesed the situation hinking that maybe i did do something wrong but im certain i didnt. im really hurt that people will automatically believe the crap she says. ive always tried to be a good person and do the right thing for my friends. i dont know what to do because i lost one of my best friends and in the last way i would have expected. what can i do? this is hurting me a lot.