Is Masturbation a Sin? Masturbation in Marriage – Masturbation outside of marriage The problem is with masturbation is all sin starts with a thought and turns into action. That means those fantasies could turn into sexual sin with someone else outside of marriage and then live with regrets or consequences. Some of you will ask is it ok for married couples to masturbate. The answer is would you tell your church you masturbate and would you tell your church you