I have a boyfriend, but I like B again recently. I really want to be with B, but I don't want to hurt my boyfriend A. What should I do?

Let yourself calm down for a while, don't choose blindly. Sometimes the wrong choice is a kind of harm to each other. A and B, you will be happier and feel safe. The most important thing is happiness. If he can't make you happy, it's no use making you happy alone. Two people can compete with each other, test their understanding and interpretation of love by examination, and get the answer you want. This is the most important thing. After all, the pursuit of love is true rather than hypocritical. The more exquisite and beautiful it is, the more superficial it is, and the more toxic it is. You can ask me if you don't understand.