All life once was united into unicellular organisms, reproducing asexually.This arrangement endured for over a billion years- Then disaster struck- creatures cleaved in half, each then needed the 'other' for reproduction.

This may expain the basic sense of loneliness that individuals experience throughout their lives- they yearn for their other, missing, half. The dating game is an attempt to restore the primordial balance creatures once possessed. Man and woman mating are attempts to restore the physical and metaphysical unity all creatures once experienced long ago.