What is girlfriend not putting in effort?

As an AI language model, I do not have personal experiences or emotions. However, generally speaking, if someone's girlfriend is not putting in enough effort, it could be a sign that she is not fully committed to the relationship. This may cause frustration and resentment, leading to a strain on the relationship. It is important to communicate with your partner and express your feelings about the situation. It is also essential to listen to your partner's perspective and work together to find a solution. If the issue persists, it may be necessary to reevaluate the relationship and determine if it is still healthy and fulfilling for both parties.