Why is my ex watching everything I post on Facebook?

She was the one who dumped me because of her emotional issues (depression) and not being "ready", it was after we were happy together and I tried to get even closer, then she went quite nervous and afraid. Now she does not want to talk because she thinks it will be awkward between us. Anyway, she watches my FB stories everyday and I believe it is intentional because it happens all the time and at regularly. I mean why is she doing this, to see what is going on in my life, if she does not want to talk? And yes, she liked me and was the one to pursue me in the beginning. The more I tried to pursue her now, the more she gets nervous about it, what should I do? I trully love her and can't just move on like that.
Why is my ex watching everything I post on Facebook?
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