Or you can ask him what's bothering him, let's hear it, but you should be prepared to accept energy consumption first, because if you enlighten others, he will pass on his negative energy to you, which will inevitably consume your energy.
If he keeps doing that, it means that he is wrong and that he is too self-centered. There is nothing wrong with such a person breaking up. People come and go all their lives, so many relatives and friends. If they leave, it will be better in the future, and there is nothing wrong with it.
A person's life is a process of increase and decrease.