If a boy sends me a text message almost every night, although it is asking about homework, it often turns into a chat in the end. Does this mean that he likes me?

At least he likes talking to you. Because I am introverted, I probably don't have many friends and I'm not good at expressing my feelings. He should like you, but don't stay away or get close because of this. If you stay away, it will hurt him, but your active approach may scare him. How to deal with this emotional distance still needs to be grasped by yourself!