Why don't I like being teased?

Psychologically, your friend likes to make fun of others. As long as the joker can accept it, there is nothing wrong. It seems that you did accept it, and you have formed a habit, that is, the so-called mindset: no one will mind my jokes. But you suddenly turned against him, and certainly had a conflict with his mentality, so he had an abnormal phenomenon in his heart, and you also felt slightly guilty because of his anger. From your description, I guess you are also very sensitive. Your mind is occupied by guilt, and naturally you feel that everything is abnormal. This angry friend is actually just angry at the moment, deliberately not talking to you, talking to others, and forming a feeling for you. Angry friends don't last long. I'll tell you what to do. There is no need to apologize for such a trifle. Apologizing will make everyone unnatural. All you have to do is pretend that nothing happened and associate with others as before. For a friend who is angry with you, as long as you find the right time to talk to him, it will soon disappear.