Why does my ex best friend stare at me?

We haven't talked in two years since our friendship ended, sadly. She does not want to forgive me over just a small thing I did, I let us drift apart. I wasn't exactly the best friend but hey we're human we make mistakes. After all drama during the past years it has cooled off but we are definitely not friends and I don't think we will ever be.. I catch her staring at me a lot. If we are at the same place for example I will turn around and find her looking at me multiple times. I catch her staring at me but I try not to look because well I don't want to. Yes I have tried talking to her a few times but she has turned me down each time. Just wondering what's up with this staring though? I really do miss her a lot and it sucks.
She misses you/wants to be friends again
She is trying to intimidate you
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Why does my ex best friend stare at me?
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