You are WAY stronger than you give yourself credit for. The amount of self-restraint you are exhibiting is amazing and EXTREMELY SMART. Just keep doing what you are doing and you will win - which means getting the best 'deal' for you and your child! If you were to confront him now and tip your hand all hell would break loose and what would THAT accomplish? No! Just keep laying low, keep your cool, and keep putting one foot in front of the other. You are WAY ahead of the game.