There's this girl who means the world to me.?

So I've met this girl about a month and a half ago. We went to the movies together with intentions of just being friends, but it ended up being much more than that. I started to feel more for her than just a friend would and I was hoping she felt the same. She adored my personality, as I did hers and she loved that I was polite and maintained a gentleman's disposition. However, she was talking to this guy who was her boyfriend and wasn't her boyfriend and on and off and so on and so forth. But he was always a real jerk to her. He would call her a ***** and yell at her and she would call me up crying and she was so miserable and I told her just to let him go. He's doing nothing with his life he just sits around all day waiting for her to get out of cl and then he goes and bothers her. He lives with his mom and he's a bum. So one day about 3-4 weeks ago she dumps him. She calls me up and she's so upset and she's crying but she finally did it. I was overwhelmed with joy. He came to her house to get some of his belongings that were there and he threatened her with suicide. He despised me and wanted to kill me but said he had no time to destroy me before he destroyed himself (that's a direct quote by the way) She had to go to his house with the police and to my surprise, the police said it wasn't their first time there because his ex girlfriend had the same problems with him, she dumped him, and he threatened her and himself and she got a restraining order. So she was done with him, so it seemed. I was on the phone with her that night and he started calling her. She was adamant in not answering the other line, but broke down and did. She talked to him for a while and I waited, hoping she would just turn him away. But she didn't. They decided to ride it out until he moved which was in about a week or two. After all this, she told me she had feelings for me. I told her I did for her too. From then on it was great. We were romantic with each other and every minute I spent with her was incredible. I loved talking to her, being with her, everything about her. All my friends and her friends loved that we had found each other and I thought this could go no where but up. But a few days before he was supposed to move, he has a big talk with her and she realizes that she still has feelings for him. She tells me this and is upset and is apologizing and I was devastated. I couldn't believe that I was lead on so badly. But she still tells me she has feelings for me and she knows I still have feelings for her. I also forgot to mention that during the time frame of her admitting her feelings to me, and her talk with that guy, we messed around a lot. It never got past kissing, but when you care about someone that much, even the smallest kiss means the world. Anyways, I just recently took her to a dance. She refused to kiss me the whole night which annoyed me. I danced with her regardless, but I also had a few drinks and I was feeling pretty wasted so my emotions got the best of me. I was mad, sad, upset, confused, everything negative. She would sit on my lap, I would hold her hand, I would tell her how I felt about her, and she would just look in my eyes and I could basically see what she was thinking. She still has feelings for me and I know it but she can't make up her mind. I would kiss her neck and her cheek but it would be shortly stopped with her saying I couldn't kiss her because she had a boyfriend. The thought of this guy just got me so mad. We went out to eat afterward and he shows up at the diner. She goes out to talk to him for 5 minutes and I ran outside just in hopes of fighting him. I'm stopped at the door being held back by a friend of mine as I watch her and him yell at each other. I'm yelling at the top of my lungs saying I want to kick his *** and if he hurts her I'll kill him. He gets a look at me, argues a little more with her, and then leaves. We get back inside the diner and things cool down and I was holding her hand and everything was usual, besides the kissing aspect of it, there was still none of that. So today, I was hoping to see her and come to find out she's at his house and she'd be there for a while. I text her a few times regarding something else and bring up how she's still there. She said she was and she'd call me later. I told her it was whatever but felt like it was the wrong thing to say. That was my last interaction with her. I don't know what to do. She gets so mad at him, he's a jerk to her, and I'm the complete opposite and she loves that but she doesn't seem to want to be with me. I just have no idea how to act, what to do, where to turn to, or anything.