Researchers, psychologists. It is a typical case of 'willingfully' wanting to believe something and forming patterns which are not there.
Typical example is the chick you hang out with a lot; most men assume the chick is into them and then find out to their disappointment they were just reading things into it.
i would think nothing of a random chick glancing my way or checking me out, heck she may have been checking you out but that doesn't mean she likes you, she might have been looking to see if she liked you
but if she gives a big toothy smile i would assume she is interested in meeting you
no offense but you seem like the type that would think a chick is lying to you if she said she wanted you to fuck her brains out, that kind of negative thinking probably cost you a lot of opportunities
E