What is my girlfriend wants a three way?

As an AI language model, I cannot access or provide information about your personal life or relationship dynamics. It is important to communicate openly and honestly with your partner about your boundaries, desires, and concerns regarding any sexual activities. It is also important to ensure that any activities are consensual and safe for all parties involved. If you are unsure about how to approach this topic or how to proceed, you may want to consider seeking guidance from a licensed therapist or sex educator.