Does he like me? Or is it just my mind playing with me?

Well, this guy in my homeroom always talks/flirts with me we sit next to each other at lunch EVERY day! We talk hangout and sometimes in cl our eyes meet and he smiles and I smile back. I've heard about other girls/boys telling me : " PSSST! ROBERT LIKES YOU! " i just blush inside. Does he like me? I know i like him; but I never show it! Sooo what do you think? [: