Serious Problem with a good friend

I have moved to a new city last year and met this great and wonderful person. She was the first friend i had here in this new place. She is 15 and i am 14. Me and her are REALLY close. We were the greatest friends, and we both really liked eachother. When i first met her, she was the happiest person in the world. But recently she found out her boyfriend was a drug addict. So She got into a fight with him and they broke up. But they got back together again. She even told me that he hit her once. I got really angry and i flipped out! She begged me not to do anything to him because she thinks she "loves" him. So, every day i would be with her, and talk to her. I would be close to her, and helped her with all her problems. She even started to cut herself because of him! I was the only one who actually helped her stop. Her boyfriend wouldnt do anything, she says he didnt care! She did stop but now started again. I would talk to her for atleast 5 hours a day. We both truly loved eachother. But her boyfriend got jealous because she got too attached to me. I was closer to her than he was. One day i had a party at my house, so me and her were dancing. We got really touchy, really really touchy. But it wasnt some dirty dancing, it was our way of showing our love for eachother. The next day her boyfriend finds out. He got really pissed and is now forcing her to ignore me and not talk to me. He even dared to call me on my cell and threaten me! I ofcourse wasnt affraid of the threat, but was affraid of her safety. In school she wont talk to me at all. But at night, we talk over the phone til 2 AM everyday on school days, and usually til 5 am on weekends. She tells me she cant talk to me because he will get mad, but she still really wants to be close. I am really pissed because i dont know what to do now! Im hoping maybe you can help? Thanks...