My ex-girlfriend suddenly sent me a message saying, I'm sorry. I miss you. How should I reply to her? What should I do? I have broken up more than once.

The other person apologized for his behavior and expressed the idea of coming back to you.

If you are in a blank period and still have this love for your ex-girlfriend, and you think you can forgive your ex-girlfriend for breaking up, then go back to her. After all, we had a relationship, and if the other party realized the mistake, they should cherish you more.

If you already have a girlfriend, or you have no feelings for your ex-girlfriend now. I suggest you ignore her, not returning is also a kind of respect for her, and it is also less right and wrong. If you really want to go back, tell her that you don't blame her. You have a girlfriend now and you are very happy. I hope she can find her happiness soon.