You know, I have been wondering about this recently myself.
I was thinking the other day that I don't remember thinking and acting the way I do now, say, six years ago. This could, however, just be a personal romanticization of my "previous" life that was created by the passage of time.
What I have curently chalked it up to, and I'm talking exclusively about social interaction with girls, is the end of each relationship i've had. It feels like those are the defining moment where I become more socially unacceptable with females.
So in short, I would say that no life experience *makes* you autstic, but right now I believe that life events can impact ones ability to, for lack of a better phrase, act NT