How to get over being hurt by someone who you was your friend??

I was an emotional wreck before I met her so I confided in her. I've been through a lot. I notice she starting making subliminal tweets about me and my life. Then pretend to be my friend. The more I tried to push her away the close she got. I asked her about she denied it. Until one day I played her game she confronted me and said how she really feel about me and that we never was friends. It was bad! The sad part is we are in our early 30s. It felt like we was in high school. The huge problem is we live in the same apartments. It's been a year and I still want to get even. When you talk about my daughter and deceased parents like you are better is below the belt! I just want to let it go for my peace but it's so hard. Any advice?