When he is injured, what he needs is not the comfort of his friends, but the quiet licking of his wounds. What kind of person is he?

I don't think so. Generally, if a person is injured, he will bear it alone. Not because he doesn't want other people's comfort, but because he is not used to this feeling. He doesn't have enough confidence in himself. Deep down, he thinks that he will not be so good that others will unconsciously care about him. He is more afraid of losing it in the future, so he would rather never have it! What he needs is not temporary comfort, but eternal support! Some people say that Rome was not built in a day. He must have developed this habit for a long time, but you can't get used to his habit, which will only make him farther and farther away from you! That will only make him less and less accustomed to showing his true self in front of others! If you really care, no matter how difficult it is, please always stand behind him and make him feel that he can be loved and worthy of being cared for!