Family Ties (1982)

S4E7 My Tutor

Alex enlists a tutor to improve his math skills, but to his surprise, the "teacher" is actually a 13-year-old prodigy. However, the young genius quickly becomes more captivated by Jennifer than by assisting Alex. When Eugene, Alex's tutor, encounters Jennifer, he becomes distracted, prompting Alex to devise a plan that will prove advantageous for both him and Eugene.