I recommend "Lichuan Youjiang" to you. The male protagonist of this novel, Jiang Lichuan, is the female protagonist's math teacher. The two of them went from childhood sweethearts to teacher and student, and then to lovers. There were also many relaxing and interesting plots in the story. They would grow together and become a better version of themselves. It was worth reading! I hope you like this fairy's recommendation. Muah ~😗