How to deal with being touched by a boy skillfully, without letting him touch his head and hurting his feelings?

You can simply tell him that you didn't wash your hair today. It's all oil. Don't touch it. It is actually a special experience for boys to touch girls' heads. I think this kind of behavior is limited to couples. Ordinary friends, I don't think it is necessary to do this kind of intimate action, which may make others misunderstand something, especially when both of them have boyfriends and boyfriends. Friends of the opposite sex should pay attention to the scale, otherwise the boyfriend or girlfriend will misunderstand, and it will be very troublesome to explain.