Why does your child not show affection towards you anymore and he does with other people?
Did do or say something to hurt their feelings. Have you not given them something they want and maybe they are playing the ignore role. You need to ask the child this. Just say plainly that you think the relationship that you have is missing something and when they ask what say, love and affection, have some examples ready, point out certain situations that they will be able to recall. Good luck.