What do you mean by an ex-girlfriend's text message?

She intends to get back together with you. This tone is sincere. I think she regrets breaking up with you and wants to have a good talk with you. Usually, if she wants to get back together, it will be like this. If it wasn't for getting back together, there was no need to talk like this, and she wouldn't suddenly send you a message. She left a message saying that she knew you were angry and that you should break up because she was wrong. Or maybe she wants to make peace with you. Reconciliation also shows that she wants to get involved in the current relationship between the two people, and the ultimate goal is also.