How can I get my ex-girlfriend to leave me alone without hurting her?
She threw me out 2 months ago after 3-1/2 years of being together and now that I am willing to concede the rightness of this being over she is always trying to find me in public.
You two broke up for a reason. She obviously forgot that reason. If she saw you with a girl you would be in a relationship with she may back off. If she doesn't, she is crazy, and remind her that the two of you broke up, and just flat out say, "Please! Let me have my own life!" If that doesn't work, you need to find a good cuckoo's nest for her.