Does my guy friend like me?

Earlier thursday my friend said, "You like dark chocolate, right?" and then handed me a little hershey. On the bus I was kind of zoning out "more than usual" and he kept asking me what was wrong. Then I kept saying it wasn't his business and he was like, "But, I might be able to console you." Then he asked me why I wasn't smiling and I laughed and said, "Why should I?" We almost always have that conversation on the bus, though. But then he said I look nice when I smile. Friday he asked me if I knew why I'm so difficult. He said that he thinks I just like seeing him get annoyed and I said, "why does everything have to be about you?" and we started laughing. (It is kind of cute, but I just don't like sharing my feelings with people.) And when we are walking down the hall to go to lunch he puts his arms around me a lot. Other times he will have his arm around my shoulder and he will put my hand on his waist. A few people we know have asked me if he's my boyfriend.