Sketchy ex girlfriend and her friend?

Ex girlfriends friend is being really annoying and creepy. Long story short, my ex dumped me last year and said she needed space but wanted to be friends. Although, I didn’t want to be friends and kept my distance.

Right after, she started playing mind games as if she wanted me to chase after her. Hot and cold, flirting with guys and all that fun stuff. She had been blocked on all social media.

Now, I know her friend is spying on me. Every time I talk to a girl, I can see that her friend is spying on me. Also, making weird comments on my social media. I know she is spying on me.

why is her friend spying on me and why do they care?
Sketchy ex girlfriend and her friend?
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