I know right now my H seems to think I am working behind the scenes to "make" my son initiate contact and ask him for time. But my son is 14... yes he has Asperger's, but the kids is smart, he sees things happening, he knows he misses his Dad. He has asked to do things that address that. My H can't seem to wrap his head around it.
Maybe giving the kids projects/tasks that are thoughtful that THEY can invite H to help or engage in would be good. It has to be things the kids are interested and excited to do so the experience is good, clearly. I don't think you can really do much on the H side of the equation until he is ready to do it on his own.
me-35 WAS-37 T-16 1/2 Son-14 (HF Aspergers) BD,ILYBINILWY,"I met my soulmate": Oct5,2013 "Letting go because I love him, holding on because I love him."