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 
Thats right dude, if they are not open to receive input and explanation from you regarding bitcoin. There is nothing else to do but let it go. Maybe someday they will start to open their eyes and see the benefits of bitcoin later onThey might see it on the news when the price of it goes up though I am sure that it would be too late to invest in it then.