A fine screwball comedy from 1937 that somehow I've managed to miss up until now.
Noted screwballer Cary Grant and Irene Dunne play upperclass socialites Jerry and Lucy Warriner. Jerry fibs to Lucy about his recent whereabouts (I don't know where he went, but it wasn't Florida) and Lucy shows up after being out all night with a suave male companion. Mutual suspicion breeds mutual distrust, and before you can say "can't we discuss this as adults", there is mutual agreement on a divorce. The only issue is who gets the cute doggie, Mr. Smith. (After some shenanigans, Mr. Smith goes to Lucy, with visiting rights to Jerry.)
But there's a 90-day wait before the divorce becomes final, and the remainder of the movie chronicles the misadventures of the (obviously still in love) couple as they struggle to come up with new partners and lives. Will they concede the obvious and get back together? Spoiler: yup.
Just about all the characters are very very rich, and this was in the midst of the Great Depression. Audiences didn't seem to mind, though; it won an Oscar for Best Director (Leo McCarey), and was nominated for five more, including Best Picture.