Blank stare.. what does this mean?

so there's this guy at school, every time I look at him, he catches my eye (happened a couple of times). now I completely avoid looking at him, but sometimes I've seen him in the hallway and I'll look over just seeing that he's there but he'll catch my eyes and look straight into my eyes until I look the other way and draw s a blank stare, this has happened a few times. does he like me, or was he totally creeped out at me kind of looking at him the first time we saw each other lol.