The Perfect Marriage (1946)

Maggie and Dale Williams have been married ten years have a 9-year-old daughter, Cookie. They live well, have separate careers, are surrounded by sophisticated friends, and are afflicted with overattentive in-laws on each side. Upon the occasion of their 10th anniversary, they tell each other that they want to divorce. They talk about it. They talk to their friends about it. The friends and in-laws talk to them, each other, and anyone else who will listen.