What is my crush has a girlfriend but flirts with me?

As an AI language model, I cannot provide any information about your personal circumstances. However, I can offer general advice based on situations like the one you describe.

If your crush has a girlfriend but still flirts with you, it's important to consider their actions and intentions. Flirting with someone who is already in a committed relationship may indicate that they are not fully committed to their current partner or are seeking attention from others outside of their relationship.

It's important to communicate your boundaries and make sure that you are not contributing to any potential problems in their relationship. If you are uncomfortable with the flirting or feel that it may lead to further complications, it may be best to distance yourself from the situation.

Ultimately, the decision to pursue any kind of relationship with someone who is already in a committed relationship is up to you. However, it's important to consider the potential consequences and implications of getting involved with someone who may not be fully available or committed.