Oh GOD. That asexual thing.
YOU'RE the one obsessed with a binary of being asexual or sexual. If you didn't come out with this utter shit, people would be uninterested in your genitals, sex life and/or lack of it. They would no doubt think you are female but that's because you are, and if they didn't inform you they think you're female, nobody needs to worry about it, do they? How about letting go of navel gazing and asking them about their lives instead?