I have the same problem J,
My ex's best friend lives across the street from me, he even goes to the same college that I do! Im bound to bump into him on campus, when we start classes again. It sucks because its like a ghost that pops up whenever I go places,, and I see me and him there the way we used to be . I HATE IT and I HATE HIM. I just wish I had never MET him.