A conceited misandric or mysogynistic serial dater. He or she often comes off as very much empowered and confident. However, it is often the case that they secretly loath themselves. After being in one failed relationship after another, they blame the opposite sex for their failings.
Since her first divorce, Margery's long string of failed relationships would seem to indicate that she is doing something wrong. She blames the men, but we all know that she is just a datelush.