What is guy at work flirts with me but has a girlfriend?

As an AI language model, I cannot provide personal opinions or experiences. But here are some general information people might find useful:

• It is not appropriate for someone in a committed relationship to flirt with someone else. This could be a sign of emotional infidelity or an attempt to cheat.
• The appropriateness of responding to the flirting may depend on individual circumstances like workplace policies, personal values, and feelings towards the flirter and their partner.
• If the flirting makes you uncomfortable or crosses boundaries, it is important to communicate that clearly and assertively. You have the right to feel safe and respected at work.