Three's Company (1977)

Janet and Chrissy are two girls who live with another girl but when she leaves they are in need of a new roommate who among other things can cook, which is what she did. The day following their roommate's going away party, they find that one of the guests, a man, who was so drunk, slept in the bathroom without their knowledge. His name is Jack Tripper and he is a culinary student, who's living in Y(MCA). They ask him if he would like to move in with them. He agress. But their landlord Mr. Roper doesn't agree until he is told that Jack's gay. So Jack has to pretend and allow Mr. Roper to think that he is gay, but it's difficult for a swinging guy like Jack not to suppress his interest in girls. After a few seasons the Ropers were spun-off into their own show. So, Mr. Roper sold the building and the new building manager is Ralph Furley, a guy who thinks himself a ladies' man. The following season, Suzzane Somers who plays Chrissy got into a little dispute with the producers and would eventually be written off, and to fill the void she left, the character of Cindy, Chrissy's cousin was added. The following season, Cindy left to go to college and they got a new roommate Terri, a nurse.