My ex sees my dd maybe 3 - 4x a year. Sometimes he rings every week, sometimes not for months. At first it hurt us both, but I have worked on making our lives happy and fulfilled so that she doesn't feel like she is missing out by not hearing from him. I always took the viewpoint that he is missing out, not my child and my dd views it that way as well (if she ever thinks about it). She is becoming a confident,happy and secure young woman. A childhood where the father is not very involved does not have be a childhood where something is missing.