I think this kind of disorder is when you feel the need to be with somebody, belong to somebody and have their attention on you.There is always the reason. What about your childhood? Were you growing up with your parents, or somebody else were helping to look after you? Do you have siblings that you think you parents loved them more than you? All those traumas happens from the past memories. But you can heal that with forgiveness towards them and yourself. Have trust that you can manage things by yourself and you don't need others approval to go on.