Every week I go to this tutoring thing, and there's this guy that I'm interested in. I keep bumping into him everywhere I go, like the nearest bookstore, market, and sidewalk. I gave him a smile, but he just looked away.

Sometimes, when we see each other at the market, he looks down, then he looks up as if he was looking for something so he scans the room, he looks at me, then looks somewhere else. Yeah, he's usually looking up to look for something...

Also, when I walked by him once, he glued his eyes to the floor (and I think I caught him smiling). That or when I stood next to him, he looked down with a slight smile.

I saw him looking a noodles once (random lol i know) but it didn't look like he was doing anything, just standing there for a while. And when I left, he left, and I know this because I walked by that aisle later and he was gone.
So is he not interested? Shy? or Interested?

He probably just thinks you're attractive. Do you even really know him? Why don't you try talking to him?