I recently moved (within the same city but a different area) and I now see my ex-boyfriend from 20 years ago at least once a week. The weird part is I barely see my next door neighbours, but my ex is walking by every time I look up. We're not friends and haven't spoken since we broke up back in the day, but I still think it's really weird. And no, I didn't know he lived in the area before I moved!