I understand that the kids miss him. I have a child and my husband left almost 3 months ago. We see him when he comes to take my child to school. We don't talk about dad. (he is 10) and thinks his dad is not a team player. I just tell him dad is working thru some things on his own. I leave the rest to his dad. I don't tell his dad anything about him unless he specifically asks otherwise you risk making them feel guilty and guess who they blame - YOU.