I agree with TrentC. He needs to make the effort to build that relationship with them.
What kind of parenting plan do you have with him? How often does he get to have them?
Kevin
Me 36, W 37 M: 08/02/97 D13, D9 1st Bomb 02/08 Reconciled 04/08 2nd Bomb: 09/08 W filed for D 02/04/09 Separated 03/09 D dismissed 06/09/09 Still separated...