Rule Number One A Different World : Season 5 Episode 6

Dwayne agrees to provide Lena with free tutoring to help her bring up her calculus grade. They bond over their mutual love of basketball and become friends. Whitley insists that Lena has a crush on Dwayne. Dwayne refuses to believe this until Lena leaves an answering machine message in which she raps about her romantic interest in him. Dwayne pushes her away, but fears that he acted insensitively. Whitley shows a surprising level of tolerance for Lena's behavior. She realizes that Lena is homesick and lonely, and offers to serve as her confidante. Ron enlists Kim's help in marketing a line of beauty products (supposedly) designed for African American women.