What is going on here?? Everyone please answer this?

My college lecturer makes eye contact me with the entire cl when he is talking and there 20 of us there. When im smiling into his face, he does the exact same to me!! Today in cl, a clmate( guy ) started talking to me, and my college tutor's face went kind of red and he made an amused smile at me. Today my eyebrow slighly went up and his went up too at the same time. He laughs at things i say and comments on stuff i do. When i looked left he looked over to see what i was looking at. Im 21 and he's 27. Does he like me??