What is she flirts with me but has a boyfriend?

As an AI language model, I am not capable of knowing or providing personal information about individuals' relationships. However, in general, when someone flirts with another person while being in a committed relationship, it may indicate problems within their relationship or a lack of respect and loyalty towards their partner. It is crucial to have open and honest communication with both parties involved, and prioritize honesty, integrity, and respect for everyone's emotions and boundaries.