If she hates me, why does she still talk to me? (Long)

Made a few threads so will keep it short. Girlfriend said she loved me, I didnt say it back, wasn't ready. She splits up with me, we're still close. She says she still likes me, I think we're going to get back together. She goes on a date, I tell her how I feel. She doesn't believe me, treats me like crap. I tell her am moving on. She has a drink, things happen between us. Same thing the next day. Week later she claims she was drunk. She wasn't, but that's her story. We try it as friends, but things get messy. A girl I went on a date wth starts pestering both me and my ex, to the point my ex injures herself from anger - punched a wall. The girl stops messaging. My ex says we can't be proper friends anymore because too much has happened, and she can't trust herself to have a drink around me because she'll want things from me. I said that it's not a proper friendship then and we should cut contact. She blocked me on Skype and Facebook, keeps me on T witter. An issue arose with my brother that same night when I was looking after him and it got me quite distressed. I turned to the only person I felt like I could - my ex. She helped me through it and was pretty amazing. I realised I wanted to be her friend so told her that the next day. She text me that same night saying she couldn't be my friend because the issue with my brother brought back bad, past memories for her. She told me to leave her alone. The girl who was pestering us emailed my ex again to ask why I was distressed the other night. She kept on and on at her, and my ex was calling me and texting me about it. She reported her email to the police, and if the girl emails my ex again, the police will speak to her. We texted a bit and things seemed okay, but then she turned a bit nasty towards me. Then yesterday, I accidentally dialled her phone. Apparently left a voicemail of 3mins, and it consisted of just me and my family talking etc. She called me back and I missed the call, then text me asking why I rang. Told her I didn't mean to. She put a tweet on Twitter saying how nervous she is about going abroad for the Summer, so I tried to be nice, told her she'd be fine etc. And she just replied to me with the country she's going to, not the one I thought she was going to. So my questions are these. If she really loved me, she wouldn't be treating me like crap, would she? Secondly, if she really hated me and wanted nothing to do with me, she'd have blocked me number, got rid of me on Twitter and wouldn't still keep in some form of contact with me, would she? Is there any hope at all, that this relationship - in some form - can be fixed at all? If so, how do I go about it? Thanks.

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