Is he a sadist?

I had a crush on a guy. We used to text a lot but I used to avoid him a lot in person. He would always look at me expecting a hi but I would always avoid. He started being very cold towards me in text. The guy tried to make me jealous with my friend by sitting next to her and avoiding me. We know each other from school but now we ignore each other. He stares at me with a sad look now. Sometimes with sharp gaze. Is he a sadist?
Is he a sadist?
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