my wife and i have been married for about four years. this man is my real father. my real mother passed away and we live with my wife. and the woman here is my wife's mother. what is called a mother-in-law. sometimes the mother-in-law comes to my house to see my wife's face and stays overnight, and we spend our days peacefully. but who would have thought... my father and my wife's mother were in such a relationship... at that time, i couldn't even speak and was frozen in place...