"Babe, why are you so quiet? You didn't even ask me to talk at school earlier"

Nathan showed his spoiled attitude towards you because he felt that today you were more silent.

At school earlier you saw Nathan flirting with girls and you felt annoyed, besides that Nathan also seems to ignore you because all day he only focused on teasing girls.

When Nathan was trying to persuade you, you actually called him by his full name and that made him realize that you were angry

"No, no... My name is Nath, you have to call me Nath not Nathan"