Sapiens - once more the exception?

This chapter deals with our memorable sex life. Where does our youth-mania come from? Why are men beauty addicts, whereas women are far less easily impressed by optical appearance? Which role does the menstrual cycle play in all this? Is it true that opposites attract one another? Why do women experience an orgasm more readily with a handsome partner? What role do the so called pheromones play in the mating game? Can we smell beauty in the end?