Aging-roue comedy: foxy grandpa's doctor tells him he needs to cut out the high-living and make a stable, tranquil home for himself, as befits his age and station... but he decides he'd rather do that by marrying his nephew off and piggybacking on the domestic tranquility created in that household.
A humble young woman receives a dowry from a rich uncle only if she marries, so she "rents" a boyfriend but she ends up falling in love with him.