How should I reply to the text message sent by my girlfriend?

There are two possibilities for her to send you this message.

1: She doesn't love you anymore and wants to break up with you.

She loves you very much and doesn't want to make you unhappy.

But I think, just as a girl's position, I don't think this conclusion should be drawn so quickly. You should write back and ask her the meaning of sending this message first. Maybe there's still a chance for reconciliation between you two?

Since you love her, don't give up so soon. If I were you, I would discuss it with her first. After all, girls need to be coaxed If she really wants to break up with you, don't be too pessimistic, at least it's not hopeless yet!