Men don't care, and they don't return messages. Should I delete him?

In this case, you don't need to delete him, just treat him as someone you don't care about. Although it is painful to do so, you may not be able to do it. Besides, if you delete him, you will probably add him back later. In this case, he will think that you care about him more and more, so that you can't achieve the goal of not caring about him. You will regard it as your WeChat. Then try to improve yourself and transfer your love to another person forever.