How to communicate with your rebellious younger brother?

Don't spoil him, because you have already reached the standard of doting.

You should clearly reject your brother. They are both high school students and almost adults. Men and women must protect their privacy. Tell him that his main task now is to study. When he goes to college or finds a girlfriend after graduating from college, he can naturally experience what he wants to experience.

If you spoil him, you may harm him.