Yeah that's it! Or could it be parasites? You know they do cause problems like paranoia and insecurity:)
On the more sober side. In my case it's a combination of them dieing off and all this crud I'm taking to try and fix my sleep problems. It's to the point of making me drag all day. Going to have to cut back on it all and still sleep somehow.
But I tend to be a bit paranoid about online encounters anymore too. Ever since someone I knew turned out to actually be two different people online. Made me distrust everyone for a while. Actually I still sometimes do.