If you tell your girl friend's father that you are in love with his daughter? Would you be stupid /?

I went to the house, of my girlfriend, and confront the father, told him I love his daughter and he was keep saying NO NO, and told me that his daughter has got good love life and happy with her love life. , he is hiding his beautiful daughter from me. Told me he will have to look after his daughter and his wife that they are safe.