Since the miracle of Cana, the three rings of dating and mating—engagement ring, wedding ring, and suffering—held steady.  That is until the 1960s and the advent of the Pill.  That's when everything changed.  

Biology does not produce civilized individuals and societies. Good parents and instilling manners—habits of the mind, heart and the guardrails of good behavior—within a healthy culture, maketh good people.
By Guy Shepherd