Does he like me from the way he acts?

Sounds to me that he definitely likes you! I had this same problem. I was very confused and didn't know if I was losing my mind or not, but how long has this been going on? Thats what you have to look at because if it has been going on for a very long time it sounds like he is a very shy guy, but if it hasnt been going on for very long this sounds like you are about to get close. My ex used to act like this and still did after a year but he still never lost love for me and I questioned it after all of the breakups. It is hard for a guy to latch on or to let go. If this guy has a big head and dont want people seeing him with you then this is a problem. My ex always faced towards me no matter what. You should confront him in the hallway or get with him privately and ask him about it. I think it's going somewhere! Good luck girl!