I too believe that some sort of social movement/ideal had something to do with us animals straying from our regular habits, however, I do not think Saint August

I too believe that some sort of social movement/ideal had something to do with us animals straying from our regular habits, however, I do not think Saint Augustine had anything to do with. I say this because the Iliad, and other works predating Christianity, put value on monogamy. We do have characters like Zesus who loved to play around with many women, but we also see what types of trouble that caused him. I believe that both male and female played a proactive part in what we now have today. In the third link there is a rather interesting theory as to how it all started(hint: women made us do it).