<human>: Can you give me a shortened version of the text?

I lived with a woman for 9 years from the time she was 19 until she turned 28. I took her to another country and supported her through school. We had our ups and downs, but we got engaged and I thought it would last forever. One Wednesday night, she left me without any explanation. She just said she didn't love me anymore. She hugged me and said she hoped we could still be friends. 

I only saw her once after that and she was with another man and didn't speak to me. She blocked me on facebook and has never replied to an email. I don't even know her phone number. People close to me have died, but this has been harder to deal with than death. I don't stalk her and I moved to another country so I wouldn't be reminded of her. 

I've been dating again for a while now. I have a new job and a new life entirely, but I still think of her every single day and sometimes dream about her too. I get that it's not ideal, but I'm not debilitated by it and I don't think I could stop caring about her anymore than I could stop caring about my siblings or my mother. I certainly don't want her back. Frankly, I'd be terrified of trusting her after this agony. 

I don't want anything, but I just wonder what is her rationale? I keep in touch with a lot of people who were less important in my life than her to some degree and I can't understand it. I do understand that she doesn't love me, but for 9 years she was my best friend. I get that we both probably needed space in the beginning, even though I didn't want to end it. But now, it's over and I am haunted by it. Even our mutual friends never mention her to me. Only once, a friend who met her after we broke up mentioned that he had met her, but no one else brings her up. That's odd too. We were together so long. Anyway, I guess I want to know if she hates me and how she rationalizes completely cutting me out of her life. We broke up 4 years ago.
<bot>: after 9 years together, my ex completely cut me off, as if she were dead. I just want to know some possible reasons.