My Ex Girlfriend Has Refused To Move On

There is something going on with me. My ex girlfriend is stalking me everywhere and she has refused to stop it. We both broke up a few months back and I stopped communicating with her, but on my birthday she sent her wishes, which I appreciated. Now she keeps coming to my home unexpectedly, telling me I should forgive her and we should continue the relationship. It is really embarrassing for me because she does it in front of my friends.

All this is happening simply because I told her we should not be in touch anymore and we should go our separate ways, but she is insisting we keep in touch. I have to let her know I do not want to because I do not cheat in my relationship. Since then, she has been coming to my home without informing me and my new relationship is at stake. Please, what can I do to stop this?

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