Break up with your girlfriend for 45 days. I drank too much last night. I texted her to ask this question. What does she mean by answering me like this? Is it possible for us?

The meaning is obvious. Literally, your relationship is completely over, and there is no room for retention. Maybe what you did together made him desperate and sad, which led to her being so firm now. Now that we have broken up, don't think about it and try to make yourself better. Try to give your next girlfriend an excellent self-blessing.