He looks at me and directly smiled at me when we pass each other?

There's this super cute guy I always pass on my way to a certain class, I'm in college. The days I have seen him, he's made very direct eye contact with me and given me a sort of side-eye look/ looked at me out of the corner of his eyes

The last time I saw him in passing, we locked eyes & he directly smiled at me (closed mouth). It seemed like he was happy to see me and then smiled even a little bit bigger because of it. I smiled back really quick after I realized what happened.

Thoughts on why a guy did this? I would love to meet him, he's super cute, but im not sure how to make that happen

He looks at me and directly smiled at me when we pass each other?
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