A film that is, at times, brilliantly funny and, at other times, mean spirited, "How to Save a Marriage" has many things going for it, including:
Tight writing that interweaves complex, comedic misunderstandings.
Strong casting, including the stars Stella Stevens and Dean Martin, and others like Eli Wallach, Anne Jackson, and Betty Field ("Picnic").
Some notable fashions that adorn the beautiful Ms. Stevens.
This is a prototypical film of the sixties, a battle of the sexes that helps codify the lines of conflict, though it goes too far. As Dean is dragged deeper and deeper into a quagmire of his own making, we might ask: is he getting what he deserves or is he a victim of his own good intentions? The film never clarifies that issue, seeming to equate his character's values with those of the other male characters, who range from benign to predatory. More subtlety might have been achieved with an actor like Jack Lemmon.
Ms. Stevens, in a role written for Marilyn Monroe, comes close to achieving the naivete cum sensuality that Ms. Monroe brings to her performances.
The ending of the film is awkward, if not a cop out. But I still recommend this film for its genuine depiction of the gender war-with all its confusion-of the sixties.