What the hell happened?

The past month I have been trying to get over this woman. We had been talking for 3 months and all of a sudden it went dead. A little backstory;

I myself am a woman who recently found out I might also like other women. All of a sudden I meet this woman, she’s more on the masculine side, which attracted me even more. We live in the same city and had been eyeing each other for a while, but never really started a conversation. In these three months we went on 2 “official” dates. They seemed to go smoothly and I found myself liking her a lot. Because we live in the same city we often bumped into each other in clubs, or bars. After a while I started to notice that every time we were in the same place, I was the one to make the first move. Keep in mind that this is my first time dating a woman, and I was very nervous. At first I didn’t mind, because I knew she was a little shy. But eventually I also wanted her to come up to me and ask me for a drink instead of the other way around. She never really gave me clear signals and was pretty vague when I asked her what it was she wanted. This one night we both were at the same club. This particular evening I though to myself, do I want to consume my whole evening again, or do I just want to hang out with my friends? I chose the latter, in my mind I did decide that if we happened to bump into each other I would say hey and see where it would go from there. We didn’t bump into each other that night, because did not make a move either. Later that week I saw her an greeted her like I normally would and she acted very cold and distant, plus she was with another girl. I didn’t think much of it back then. I texted her to check if she was okay, and she basically told me to “get lost, bye bye”. Naturally I asked her if it had anything to do with the evening before. She said that I didn’t say hi to her and that’s she’s done with me.

Its been a month now and I still think about her every day. I dream about her. When I think about her my heart flutters, and then it aches because I feel hurt. We are not on speaking terms at the moment, and every time I see her she acts cold, rude and very degrading towards me. I keep thinking I should know better. Because the irony is that I have attachment issues and fear of abandonment at the same time. How am I still thinking about this girl? Why am I in it so deep? Why did she cut it off like that all of a sudden?

Please help