If a guys glances in a girl's direction more than once during class what does it mean?

A guy in my college course does this but he never speaks to me. Yet he always tries to sit next to me (but it might just be a coincidence that he's sitting there) and once when i tried to catch his glance, he turned away before i can even look back at him. Ugh I don't know i'm confused
If a guys glances in a girl's direction more than once during class what does it mean?
Post Opinion