Only Two Can Play

Only Two Can Play is a 1962 comedy film based on the novel That Uncertain Feeling by Kingsley Amis. Sidney Gilliat directed the film from a screenplay by Bryan Forbes.

John Lewis Sellers is a poorly paid and professionally frustrated Welsh librarian and occasional drama critic, whose affections fluctuate between glamorous Liz Mai Zetterling, and his longsuffering wife Jean Virginia Maskell.When a better paid job becomes vacant, Lewis is reluctant to apply, but is persuaded to do so by Jean. Then he meets the obviously attractive Elizabeth GruffyddWilliams Liz, a designer with the local amdram company and wife of a local councillor. ........

Source: Wikipedia