Danno's suggestion is more reasoned out than our current laws though. The 16-17-18 year old AOC laws are designed to "protect" people who are physically mature enough to "have sex," which of course in current society refers completely to stuffing things in bodily orifices. A 14 yr old AOC would set the age where a normal teenager is able to have sexual intercourse w/o the immediate threat of physical harm.
You don't need an AOC law to protect 10 year olds if the standard is objective, bodily harm & not our literally insane view of sexuality as a culture. It's impossible to have either straight or queer sex (by the above definition) w/ a 10 year old w/o physically harming them, so it should be a serious/lifetime incarceration-type crime in the same way as permanently maiming a little kid in some other way should be, even if the child consented fully.