I Love My Wife

Richard Burrows is a medical student with a pregnant wife, Jody, who becomes unappealing to him before and after childbirth, abstaining from sex and gaining weight. He meets a married model, Helene Donnelly, and begins meeting her secretly in motels. Richard evicts his mother-in-law from the premises and persuades Jody to go to a weight-loss center. When his wife returns, she is slim again and Richard is pleased, until learning that now she wants a divorce.