Can someone explain this?

I talked to this girl for over a year, and we got to the point where we were about to date, she said she loved me and I loved her. I don't know why but I still do. Not even a week and a half later she’s ghosted me leaving me on delivered and read. She told me she wasn’t talking to anybody. That it had nothing to do with me. Then, all of the sudden while still ignoring me, her snap score goes up 500 in less than 12hrs. It does that every day. How can she be so heartless, so gutless, to not at least tell me she doesn’t want me instead of playing with my heart?
Can someone explain this?
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