Is he avoiding me?

So there's this guy I met in one of my classes last semester. We kind of became classroom buddies and would always sit next to each other in the class. We never hung out outside of it. Then over Christmas break, I sent him messages over Myspace and told him maybe we could hang out when school started back up. He seemed excited and told me his schedule and how we could probably hang out every Tuesday/Thursday. So now we're about 4 weeks into the semester, and I rarely see him around. Sometimes I'll tell him that I hope to see him next week and he says "Yeah, hopefully we'll be able to talk in real life again soon! Maybe Tuesday!". Then the next week I won't see him. The two times I have seen him, he's come in late and we only got to hang out for maybe 20 minutes at a time. We've talked more online than in real life.

We never really make set plans, just "maybe I'll see you then" or whatnot. But it just seems like I'm being ignored. I do consider him my friend so I don't know. So, what do you all think is going on here?