Back when I was in therapy I remember going to the guy once, confused, because some girl in one of my classes kept offering me a ride with her to my next class.
He asked me what her motivation might be. I told him I had no idea, thinking that there was no reason for most people to go out of their way to have my company.
He asked me to guess, and I said, "If I were her, I might be doing it because I wanted to get to know the person, or because we both had our next class in the same place and it was more convenient."
He fell all over me with praise for having thought of that angle. It was quite embarrassing. This is the guy who diagnosed me, and he clearly thought I was having some nebulous, disabling 'theory of mind' issues.
He was jumping the gun, though. It was just plain old insecurity.
I suspect people make too much of the whole 'theory of mind' thing. It doesn't occur to plenty of NT's that spectrumites might not think how they do. Look at how many of us were "encouraged" (read: forced) by our parents to learn to socialize, because after all, it's fun, right?