I can't tell if he likes me as a friend or something more?

There is this one guy I am really starting to like, a lot. We have1 cl together and haven't really talked much until this week. He is also in my homeroom so during testing we had to sit near each other (ABC order). We talked the whole time. We also have the same math teacher, we have been going to her clroom during different cles to help her get a big project set up for the rest of the school. He and I walked all around the school and talked. He would always talk to me in our other cl that we had together. This went on for about 3 days. Now that today is Friday, he acted a little strange and it seemed like he was trying to avoid me. Is this some stupid, silly crush that I was trying to make it be something that it's not or what? I know, I know, Stupid Question, but I really like this guy and I'm not sure what to think about this.