

Jason is in need of a collaborator to give him inspiration. Phoebe is a small-town English teacher with an urge to write. On the day Jason is being married, Jason and Phoebe meet and form a partnership.
Acting
Mary Steenburgen survives this with dignity somehow.
Writing
Neil Simon's rare misfire—dialogue that thinks it's clever.

Director
Arthur Hiller
Trivia, insights & behind the scenes
Neil Simon based this on his own second marriage to Marsha Mason, which ended in divorce shortly after.
This bombed so hard it killed the Dudley Moore leading-man era—Arthur 2 came next as damage control.