Why won''t he see our children?

Separated for almost 3 months and my ex doesn''t really want to have the children. He has them for one weekend a fortnight and makes no other effort to see them or speak with them. When we were together he would not stay away for even one night and now I feel that he has dumped them completely. I can''t understand it at all. ..they are just lovely beautiful kids and deserve a father that consistently shows love and support. I believe that he thinks that I am trying to control him by asking him to make an effort with the kids but I really don''t care what else he does. ..i want the kids to have the father they deserve. ..help!!!

I''ve posted on another thread of yours but just wanted to add that Relationships Australia or private family therapists can sit down with you and your husband to talk about the welfare of the children and work out a parenting plan if you haven''t done that already. Would that be something he might be willing to do? They aim to be neutral but their priority is the well-being of the kids, which is clearly your major concern too.