I have broken up with my boyfriend, but he often sends me short messages and says something that makes me sad. What should I do? I don't want to hurt him!

Maybe your boyfriend can't let you go. If you think it's impossible for you, then ignore him and change your mobile phone number. If you still like him, you might as well give him another chance, that is, give yourself another chance. You just don't know why you broke up. You should know what you want. Don't force everything. You should talk about it.