Did the person who broke up send me a message?

First of all, ask yourself whether you still like him and whether the reason for not breaking up no longer exists.

If you still want to be together, then slowly start testing his heart and keep in touch. Of course, you should also understand that it may be just a whim, so be prepared psychologically and don't hurt yourself again.

If you don't want to do it, leave him alone. If you don't want to do it, never express a polite response in a text message, but don't use an emotional way.