I Have a Crush

This is a weird event. Theres a guy i thinks cute, i haven't talked to him or anything really. We had one conversation about a book we both reached for. I needed it for art references. It went like this. He says oh you can look at it first, then i say oh its ok im just looking for the secene with the person rippinf off their skin and he says its in the beginning, i go and see it and say thanks and i dont look at him, because hes cute. But anyway today i ended up sitting to the side looking at him in art and i look every now and then. I swear he would turn to look at me and at one point he lifts the back of his shirt and just leaves his hand there exposing his lower back and some of his boxers. The rest of the class he was fidgety. The only other thing odd is once he bent way over to look at a book and he had a nice behind? Am i over analyzing or is this weird.