We have to get out of the simple pattern that it is natural for a boy to desire a girl, no matter what, and if he desires her she has to comply either after some blah blah or without any. We have to deal with sex for what it is a physical and hormonal drive or impulse that has nothing to do with love, even though it may be associated to love.
That heterosexual male-dominated posture of sex is purely cultural and based on some blind hormonal and physical drives, not on any logical mental or thought-through process or procedure.
It took six years for my best friend, who was one third of my age when we connected, to take the initiative of hugging me though I asked him if I could six years before and he said no. He knew I wanted it but he surprised me a lot when six years later he did it without asking, just out of an impulse that he must have thought over for those six years.
That has nothing to do with sex. That has a lot to do with love.
We have to teach our kids the difference between sex and love, and put physical contact in perspective: physical contact that expresses love and has nothing to do with desire or sex, versus physical contact whose objective is nothing but sex, with love or without love.