Should lovers who have broken up for a year return messages?

If I send him a message to you after breaking up. It depends on why you broke up. If it's just some common contradictions, you should answer them. If it is a question of principle, there is no need to answer it. For example, because. One party cheated. Or some major problems, then there is no need to go back, and two people should break the point, which is good for both of them.