Oh, yes. There was another thread somewhere on here that focused on how we perceive identity. I can honestly attest to having thought the same as you.
Movies were my training, for nearly everything. I know how saying that could be perceived as strange, but I had such a great foundation to start with, I took really great qualities away from Spielberg films, and a ton of wonderful little childhood flavorings that had given me a pretty solid understanding of human nature and behavior. Oddly enough, I don't think I would have survived this long, seeing how severe the Autism was at a young age, without film shoving my brain towards the people near, and further, into those people's brains. I constantly watched how others conversed, and weighed it in some large internal database that allowed me to construct a proper image.
Like you said, though, some times I feel as though I'm not being 'honest' to something inside myself, even after having said a certain sentence within converstation. That can be quite tiring. I'm constantly trying to figure out, even now as I sit here, how I should behave to allow myself that flexibility of being true to my Aspie self. Or even some "other" self I've created along the way.