Screwball comedies were born during the depression. It Happened One Night starring Clark Gable and Claudette Colbert in 1934. The term comes from '30s slang meaning an eccentric person.
Plots center on a couple who are romantically linked.
The premises of the story may be a bit of a stretch. In My Favorite Wife Irene Dunne is supposed to have been stuck on an abandoned island for seven years before being rescued. Or, in My Man Godfrey a bum found in the local dump becomes the butler to the wealthy family of the woman who found him. He helps straighten out the family while falling in love with the daughter who found him. Then it turns out that his family is wealthy but he has broken with them and so on.