Ok so my ex hasent seen our son in 19 months.. And he litteraly live around the corner.. He hangs out with my younger sister who lives next door to me, I see his driving down the street all the time and he was even right behind me lastnight and said nothing didn't even flag me down to see our son who was in the car.. I don't know weather to call it a lost cause with him or what.. WHAT DO I DO..