Why did this former friend snap on me? What is her problem!?

Okay this girl and I were childhood friends, until I moved away to a different state when I was 15. She found me on myspace not to long ago, saying remember me! I used to live next door to you when you were younger. Okay now, we have exchanged numbers, talked on the phone every day. She told me her problems, I have told her mine. She started telling me that she was having a hard time finding a descent man,from her telling me about her being so promiscuous, so me being a friend I tried to introduce her to my boyfriends friends. She starts trying to talk my boyfriend! Emailing him on myspace, leaving comments on his page about his lips, and then she gave him her number. How i came about this information is very funny. She calls me one giving day, and informs me, that I shouldn't speak to my boyfriend anymore. She told me that he tried to get to know her, she thought she should let me know, he isn't any good. So I tell her that Im going to speak to him. She snaps out! Don't call him. Just leave him alone! He doesn't have anything to offer you! He called me right after I got off the phone with her. I instantly snapped at him. You are trying to talk to my friend! He hung up. Then he calls back. He spoke in a very soft voice and said: people who you think are your friends are really not your friends; I asked him. What are you talking about he goes on about how she trashed talked me to him! I was extremely hurt by this information. He told me she had discussed with him that she was having a hard time reaching s during s! Personal things that she had told me! So I knew it was true. I LET IT SLIDE! I was thinking why would I let a man come in between are relaltionship as friends! In due time, she became harder to reach over the phone. She either wouldn't answer the phone or tell me she was going to call me back and didn't. As time went on I stopped calling her altogether for about two weeks. When I eventually spoke to her, I'd ask why havent you been answering my calls, her response is "oh I thought you were mad at me" I am like for what? Do you have a guilty mind frame? As we are speaking she has an attitude, I'm telling her about the fun weekend I had, about how 3 cousins like me and are bashing each other to want to be with me. She laughs and says" Hah they are just ping you around. I said excuse me! No one pes me around, I cant help it that they have an attraction to me, I mean where id all this coming from? what did I do to you! She had the nerve to fix her lips and say your a hoe! The said things is that you dont even get paid for it! Im saying to myself, me and her dont even hang out together, long distant friendship! What did I do to piss her off. Im like she has the nerve, when all she does is sleep with married men, and sleep with men in all kinds of weird places, and none of them wants to be in a relationship with her! She calls me a Hoe!