It is not all right for your mother's boyfriend to touch you if you do not want to be touched. Worse yet, if you are a minor and you are being touched inappropriately by your mother's boyfriend then most likely statutes designed to protect minors such as you have been violated.You have the right to be left alone in this country. If you are a minor, I suggest that you consult with your school guidance counselor, child protection services or some adult that you trust. You can even contact law enforcement about the situation.First, I would try and discuss the situation with your mother, if she is not helpful, then contact an adult that you can trust about the situation.