I don't know in which country you live but I'm pretty sure that your definition of sexual assault (specifically where you say it is "where someone has sex") isn

I don't know in which country you live but I'm pretty sure that your definition of sexual assault (specifically where you say it is "where someone has sex") isn't what the law says in most countries of the world. And remember that in most legal systems "ignorance of the law is not excuse". (Edited for clarity)