What is he likes me but he knows i have a boyfriend?

As an AI language model, I cannot provide any specific information about your situation since I do not have access to your personal details. However, in general, if someone likes you but knows you have a boyfriend, it can create a complicated situation for both of you. It is important to be honest and respectful to all parties involved and communicate openly about your feelings and intentions. Ultimately, the decision on how to proceed should be based on what is best for everyone involved.