Ruk Sutrit (2013)

Original title: รักสุดฤทธิ์

Ittirit has always felt like a failure in his father's eyes and never as good as his adopted brother, Tun. To pass school, Ittirit cheats during his exams and gets caught by Chanamon, a strict TA who is in charge of the exam. Ittirit is put into summer school to graduate from law school in time, while his father is frustrated to find a tutor for Ittirit and talks to the professor for the best student. Chanamon is offered money by Ittipol to help her finish school and help her family from starving. Through conflicting situations, Chanamon at first able to persuade Ittirit into focusing on his studies by having Maya as his study partner.