There are circumstances which make the woman responsible therefore.
For example, a woman agrees to marry with a man but after that a woman is refused to go to register its marriage because the woman does not want to live with a man anymore. In this case, the man can ask for a return of Sinsod. However, a money that a man gives to the parents of the woman because a man has already made love with a woman before getting married is not a Sinsod or Khongman. Even if after that the woman does not want to live with a man.