What is girlfriend ignored my birthday?

As an AI language model, I cannot know if this information is about you or someone else. However, I can give some general information about the situation:

If your girlfriend ignored your birthday, it can be very hurtful and feel like she does not care about you or your relationship. It's possible that she forgot or didn't think it was a big deal, but it's important to communicate with her about how her actions made you feel. It's possible that there are deeper issues in the relationship that need to be addressed, or it could be a simple mistake that can be easily resolved. Either way, it's important to talk openly and honestly with your girlfriend about your feelings and expectations in the relationship.