Because I want to concentrate on the postgraduate entrance examination and let go of my feelings for him, what kind of personality signature should I write to express my feelings for him? Will he still be there when it's all over?
If you want to concentrate on the postgraduate entrance examination and let go of your feelings for him, why write a personalized signature that he may not understand to show your feelings for him? You can directly tell him that you want to take the postgraduate entrance examination, and from what date will you start reviewing? During this period, you may not have time to make an appointment, and you may not be able to reply in time. Communicate with him in advance, and I think he will support you for the postgraduate entrance examination.
You write your personal signature. Boys are careless and less considerate than girls, so I suggest you communicate with him directly, otherwise it will be easy for him to misunderstand how you suddenly disappeared.