Hi there. I'm asking on behalf of a friend as they are very concerned about their situation. They have a young child with an ex-partner who is the 'primary' parent and receives the child maintenance, but during a dispute, their previously respected agreement to pay equally for their child's life and not involve the CMS has been broken and the ex has said that they want maintenance. Friend has the child at least three nights a week, but four during school holidays, and whenever the ex goes away (a couple of weeks at a time). Friend pays considerably more to child's life, eg clothes and shoes, clubs and activities, and they do 100% of the picking up and dropping off every week. Child goes on holiday with friend, friend has much more contact with school, and child is registered at doctor's etc in both places. Friend has Parental Responsibility, but since ex claims the child benefit, it seems that the ex is entitled to a relatively small but still sizeable contribution to their half of the week. Friend is completely shocked and angry. Ex claims lots of benefits already for other children, and friend helps them out a lot. Is this legitimate and will this go ahead? If so, will the friend have to pay for all of the time their agreement stood? What are the chances of CMS deciding that the parents share care equally and child maintenance isn't relevant? Thank you.