Girls, Girl ignoring me why?

So this girl from highschool said she had a crush on me. We had some good night together back in the day no sex just hanging out but I did use to spoon her as we fell asleep some nights. One day a few years ago I told her I had feelings for her but she had a boyfriend friend and said that she was flattered but that she was taken. She stopped talking to me after that until I texted her saying " you think you can just walk away from you and me" after that she told me never to talk to her again. Does she really mean it? she doesn't even have a boyfriend now but ignores me. I tried requesting her on Instagram but leaves me on requested. I think I love her cause I can't get her out of my head what should I do. I know that text might have sounded creepy but I care about her so much

Girls, Girl ignoring me why?
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