Don't do anything to help him. To do so is counterproductive to your goal of a reunited family. To make his situation more comfortable in his eyes is to make it less likely he will return.
"Fear is the mind-killer" Muad'Dib Me 53, XW 44, DD 14, DS 12 Bomb and OM 12/15/06 Separated 01/02/07 Divorced 05/13/08 X married OM(OMH) 08/2009 Married 06/09/13