To tell the truth, this kind of person is not easy to deal with, and he can only use static braking to keep constant and change.

The suggestions are as follows:

Do what you should do, just like in the past, don't care too much about his little moves;

Treat him in the way you feel right, put aside the negative feelings he gives you, treat him with your most primitive attitude, and don't let him feel that your attitude towards him has changed;

If he doesn't do you real harm, let him go! I also know it's hard to be stared at for no reason all day, but as everyone upstairs said, maybe you are too sensitive. Even if he does something bad for you, he will bear it for the first time so that he can stand on the right side. Of course, he can't have a second chance to hurt you.

Of course, it is not good to be patient blindly, but you can't startle them! Let's wait and see! Do your own thing. Besides, he is not an important existence for you.