What is my girlfriend is too good for me?

As an AI language model, I cannot determine who your girlfriend is and thus cannot provide any specific information about her. However, the phrase "my girlfriend is too good for me" generally indicates a feeling of unworthiness or self-doubt in the relationship. It's important to remember that relationships are a two-way street and that your girlfriend is with you because she sees something special in you. Communication and building a strong foundation of trust and mutual respect are key to sustaining a healthy relationship.