I lived in a shared house in my early twenties with a window facing out on to an office building. We started getting notes through the door addressed to me and I also started to get emails online and on facebook from a man who said he worked in the building opposite and that he was watching me. It escalated over a few days to the point where I would leave the house and he would send me an email commenting on what I was wearing and where I was going, so he was obviously following me. He did various other things including starting a facebook group which featured updates on what I was doing which he invited my facebook friends to join and posted pictures of me on (then deleted.)
I called the police, who went to his house and basically told him to stop. He accepted a caution.
A few months ago (now ten years later - I'm in my early thirties, married with children and moved hundreds of miles from where I originally was) I've received a series of messages from a false profile telling me that it's him and basically blaming me for causing his interest ten years ago because I was a "tease" and performing strip and masturbation shows in front of the window specifically for him and for bringing men home and having sex with them to "make him jealous." Obviously this is bollocks.
He seems to be under the impression that I have been trying to get his attention / that he and I are some sort of long lost lovers / meant to be / and all I actually need is a discrete way for us to be in contact. I.e. we just need to hide our attraction/affair better. He said he has set up a way for us to be in contact away from the prying eyes of police / my DH.
I'm not sure whether to contact the police again - this would be a new branch with no record of what previously happened, or to reply to his messages and directly dispel all his delusions. Ie "I am not interested in you, you are frightening me. Nothing you say happened ever happened and if you contact me again I will be calling the police (again.)"
What should I be doing?