What's wrong with my ex-girlfriend not returning messages?

Sending a message to an ex-girlfriend without replying may have the following situations:

1. She may have replied to your message or it is inconvenient, which may be due to her personal situation or environmental factors. In this case, you can try to contact her later, or communicate with her in other ways, such as telephone or face to face.

She may not know how to reply to your message. This may be because she doesn't know how to deal with your relationship, or she is thinking about how to reply to your message. In this case, you can give her some time to think and respond, but you should also pay attention to avoid waiting too long.

She may not want to reply to your message. This may be because she is not satisfied with you or has no feelings for you, or her emotional state has changed, such as having a new boyfriend. In this case, you need to respect her decision and don't pursue her response too much to avoid disturbing her.

She may be experiencing some personal problems or difficulties, which makes it impossible for her to reply to your message. This may be because of her family problems, work problems, health problems or other factors. In this case, you can ask her friends or others to understand the situation and give appropriate support and care.

In any case, you need to respect her decision and situation, and make appropriate adjustments and decisions according to her personal situation and emotional state.