What is does he like me or is it in my head?

As an AI language model, I do not have access to your personal interactions with any individual, therefore, I cannot accurately determine whether someone likes you or if it is just in your head. However, typical signs that someone may like you include prolonged eye contact, frequent attempts at conversation and physical touch such as playful nudges or touches on the arm. Nonetheless, it is important to remember that the only way to know for sure is to communicate openly and directly with the person in question.