You really want to have a development with him. The other person has ideas, but he is unstable. You can vaguely feel that the relationship has reached a state where you can understand the positions of both sides and have a clear understanding of your previous contacts, so you have an idea of what will happen next. Boys are introverted and don't want to take the initiative. He may just be thinking about it. And you don't want to waste so much thought on it because of the seemingly indifferent attitude of the other party.
Generally speaking, there will be no satisfactory development.