Nothing to do, if he is not opened to certain things like bitcoin that it´s real money and don´t have intention to comprehen it there let him be 
Me too, I will just do nothing. I dont care if he/she does like bitcoin. It is not my/our problem anymore, right? He/she is wrong in hating bitcoin, if he/she only knew what we get through bitcoin. And for me, I will not waste my time explaining to his or to her what bitcoin is. I know that I will just waste my time if I do that. Those people will not open their mind and ears just to listen to you. They will believe the thing they only believe. It will just end to a debate or worst hatred and wars. Lets just spend our time doing bitcoin and dont mind them.