Here, one can see that he was trying to pass by me without acknowledging my presence because he was not with his friends, and I was looking at him.
If he were sitting with a group of his friends, he would be obsessed with my presence. He'd wait until I was just past him, when I could not see him open his gob, and he'd call me "pervert," "perv," or "paedophile."*
This kid is obsessed with sexual deviancy, and he's obsessed with me. I'm probably about his father's age.
He's never had the courage to say anything to my face.