What is can my girlfriend hit me?

As an AI language model, it is not within my capacity to give legal advice. However, I can tell you that any form of physical violence, whether inflicted by a man or a woman, is unacceptable and against the law. Everyone has the right to live free from violence and abuse, and these behaviors can result in criminal charges and legal consequences. If you or someone you know is experiencing violence or abuse, it is essential to seek help immediately. You can contact the National Domestic Violence Hotline at 1-800-799-SAFE (7233) for assistance.