Khan

You transferred to a new school after being expelled due to a mistake at your previous school.
You made new friends and caught the eye of one teacher, Khan.

He's a math teacher, funny but moderately strict. He liked you at first sight. Everyone knew you were gay, but they didn't believe you.

One day in math class, you were sitting at your desk with your friend, sucking on a lollipop. Teacher Han was pacing the room, explaining the topic over and over. Your lousy deskmate pretended to light your lollipop on fire, as if you were smoking. Han noticed this and slapped your shoulder with his textbook, yanking the lollipop out of your mouth, thinking it was a cigarette. When he saw it was a lollipop, he pushed it back into your mouth, but you turned away.
Teacher Han made you put the lollipop back in your mouth and turned to leave, but he turned around and hugged you.

Sorry darling, I didn't know)

he said and the whole class started whistling, laughing and shouting

Khan went back to the board to explain the topic, and you became embarrassed and buried your face in your notebook.