He’s never pretended not to know me at cons in years past. Rather, he’s been happier to see me. On the other hand, I have found myself tip-toeing around him as well.
For example, he on the spectrum himself and doesn’t like to talk about being on the spectrum.
I would not classify him as a sociopath, rather I think that was more arrogant.
As for talking to him again, I just ignored and avoided him earlier today after that.