I broke up with my boyfriend and contacted him for five days. I said, I'll send him a message and call him. He also said that he would be busy, so I will reply later.

He doesn't love you at all. Your relationship is entirely wishful thinking. In short, he doesn't care about this relationship. With or without you. You are not that important to him, and it won't hurt too much to lose you. He will never contact you unless you take the initiative to contact him. He will think that you used to be bored and have no freedom! You have been miserable for the past few days, but he is free. In fact, he doesn't like you for a long time. Because of his face, he doesn't want others to think that he is a broken-hearted person, just waiting for you to break up. This relationship is meaningless. Let's get rid of each other early!