What I understand is; you are the source of his financial securities and he does not want to lose that! He seems to be too selfish in his motives. You should honestly discuss your problem with your future husband. There is nothing wrong in exposing him when he is that mean to you. If your in-laws are agreeing then you should go ahead. It looks like your father may be suffering from some psychiatric illness, may be Mood disorder, Schizophrenia or Personality disorder.