What is he clinical name for the following behavior: A man continually has multiple relationships with women, unbeknownst to the individual women, telling each one that he is in love with them and, when possible, has sex with them. The man also has no regard for the women’s feelings and takes no responsibility for his behavior. What is the clinical name for such behavior and what could be the possible causes?

Dr. Robert dealt with this question on his website in an article about womanizers.