Could he like me?

Its this guy in my class, he sits on the other side. I didn't pay any attention to he until one day I walking to my yoga class. He was on the phone when he noticed me and looked for a while. Today in class I think he glanced at me a few times. My professor had us stand in a line to sign a paper. The guy stood in front of me and looked back at me. I felt nervous, so I tried to avoid eye contact. He then allowed me to get in front of him. After class he took just as long to pack his bag as I did. As always I could be over thinking. When I like someone my first instinct is to act like I don't. Any suggestion or tips?