When a guy ignores you but glances from afar?

Anonymous
This is not a random guy. Weeks ago, he used to stare at me, glance, smile, be close to me but not too much. As I didn't answer his interest because I believed he was making fun of me, he progressively stopped smiling, staring and only glances at me from afar, ignoring me when he walks past.
I don't understand why he glances from far but ignores me most of the time.
Today, I was waiting at the door of my class with friends and there were quite a lot of people in the corridor. Then, the guy arrived, walking past us. As there were a lot of people, he was close to us and only brushes up against me a little, whereas he almost pushes my friend.
What does all that mean?
Updates
+1 y
And the brush up, what does it mean?
When a guy ignores you but glances from afar?
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