Why the male teacher is doing so?

Hi, can anyone please help me sorting out my problem... I'm a student and i have one of my teachers whom i think is so notorious to me! he is smiling at me while taking classes and he always look at me while walking along my classroom and i don't have a habit of taking notes for his subject. yet, i'm the first ranker in his subject. i usually talk about something and laugh with my friends during his classes.. he don't like that.. but, he don't scold me or show his anger directly to me.. rather, he just advice the other person to whom i talk and laugh and he also asks some subject questions to them and insult them.. and i don't know why I'm feeling like this... that he's so different to me.. and he always intentionally check my notes though he knows that nothing will be there... and after checking the notes, he don't scold me or advice, he just smile and sights me... i want to know WHAT MY TEACHER IS FEELING FOR ME?

Why the male teacher is doing so?
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