Cheers - Season 11 - Eps 6: Teaching with the Enemy (1)
Rebecca spots Lilith with another man, and doesn't know whether to tell Frasier. Later, Lilith confesses to Frasier that she cheated on him - once. Frasier is devastated, and after he and Lilith talk about it, Frasier asks Lilith to tell her lover the affair is over. Lilith goes to see him - and then comes back saying she wants to leave Frasier. Meanwhile Sam hires a bouncer named Tiny, but can't bring himself to fire Tiny when nobody wants to go near him.
About Cheers

Title: Cheers
First Air Date: 1982-09-30
Last Air Date: 1993-05-20
Status: Ended
Rating: 7.6/10 (from 612 votes)
Language: EN
Seasons: 12
Total Episodes: 269
Network: NBC
Genres: Comedy
Production Companies: Paramount Television, Charles/Burrows/Charles Productions
Synopsis
The story about a blue-collar Boston bar run by former sports star Sam Malone and the quirky and wonderful people who worked and drank there.
Cast

Ted Danson
Sam Malone

Kirstie Alley
Rebecca Howe

Rhea Perlman
Carla Tortelli

George Wendt
Norm Peterson

John Ratzenberger
Cliff Clavin

Woody Harrelson
Woody Boyd

Kelsey Grammer
Frasier Crane