In a way, by making yourself a doormat, you are making them treat you like s**t.
Well, maybe not 'making', but certainly 'letting'
It's not just aspies that forget about other's feelings: If you don't speak up when someone hurts you, or you don't want to go along with a plan, then don't complain when people don't automatically read your mind, or forget about you.
EDIT: sorry, that sounds a little harsh: I meant that you shouldn't be afraid to voice your opinion or when someone crosses your boundary.