There is a difference between having sex when you are single with someone who you are not married to and cheating on hour spouse with someone else.. These women were single and had sex with someone and got knocked up. They were not cheating on anyone? I think as long as you have one partner at a time, there is nothing wrong in sex out of wedlock but once you are committed to someone, you should not cheat on that person. We are not talking about adultry here.. These women were not adultresses..