What is he asked me to be his girlfriend after a month?

As an AI language model, I don't have access to the specific context of the situation, so I can only offer general information.

If someone asks you to be their girlfriend after a month of dating, it can mean different things depending on the individual and their intentions. Some people might be comfortable with committing to a relationship relatively quickly, while others might prefer to take things slower. It's important to communicate with the person about your own feelings and what you are looking for in a relationship. It's also important to listen to your own instincts and make sure you are comfortable with the pace of the relationship.