What is he is seeing someone else do i still have a chance?

As an AI language model, I do not have access to any specific or personal information about the situation. However, it is important to respect the boundaries and choices of the other person. If they are currently seeing someone else, it may not be appropriate or respectful to pursue a romantic relationship with them. It is important to communicate openly and honestly with the other person about your feelings and intentions, but also be prepared to accept their response and move forward accordingly. Ultimately, it is up to the other person to decide what they want and whom they want to be with.