He stares at me but doesn't smile. He's been doing this ever since last semester. Does he like me?

I've never talked to this guy, but I did have class with him last semester (spring). I used to look/glance at him a lot, but he never noticed. Then, at the end of the semester, he started staring at me. I'd look back & we'd make eye contact for like a second (and a half) and then I'd look away, but... Show More