This book is about the mating behavior of humans as a biological species, or sex. We are all attracted to this object, and yet we do not have a clear idea about its origin. What is the biological meaning of the fact that we have sex, although we rarely do it for procreation? Why do we get married when marriage least of all guarantees sex? Why do we fall in love with certain people? Do men really think about sex more often than women? Is it true that women unconsciously seek wealthy men who can financially provide for their offspring?

In his extraordinary research, the famous anthropologist studies many issues related to the endlessly mysterious process of pair formation in human society. But since our species is motivated by more than just biological impulses, the author looks at sex from our cultural perspective as well.