I've been lurking on this thread and the previous threads for a long time, I'd like to just vent my spleen a bit if you don't mind.
I was diagnosed with Asperger's when I was nineteen. It turned out to be a misdiagnosis, I have a physical disability that affects my cognitive function and the lingering effects of an attachment disorder which combined did mimic a lot of the symptoms of Asperger's. Personally I believe that if the therapist who diagnosed me had spent more than two sessions with me and took into account my home life I would never have been diagnosed and avoided a lot of unpleasantness.
Shortly after being diagnosed, I was recommended a support group that was, up until that point, all men. Mentally I was a lot younger than my actual age, so nineteen but looked and felt about fourteen. The man who ran the support group was thirty years old and told me he had feelings for me (I found out later he did this to pretty much every girl who had ever been a part of the group; girls did not last long there) so we started dating. I was at a very low ebb and he seemed like a decent guy at the start and probably the best I could do.
The relationship was a disaster. He pushed me to keep attending the support group meetings even when the other members made me uncomfortable (they could be very sexually inappropriate). He was needy, clingy and convinced that having Asperger's gave him a superior outlook than most people. He was unsympathetic to my worsening physical illness and never listened to anything I said about my interests. My mother was convinced I should marry him, and she pushed me to stay in the relationship until I couldn't handle it any more and cut all ties.
That was twelve years ago. My ex has continued to keep tabs on me through people we both knew, and has tried to engage with me multiple times on forums and social media to the point that I have several sock puppet emails. He knew about a promotion I got five years ago that I had only told a handful of people about. His current girlfriend apparently saw me in a shop once and wanted to fight me because of how I 'treated' him when we were going out; I have never met her, had no idea who she was but she knew exactly what I looked like and where I tended to shop.
I know for a fact that he was planning to propose to me at one point, and I suppose I read these threads as a sort of 'there but for the grace of god go I' type of thing.