Loretta Castorini, a widow from an Italian family, agrees to marry without love — then meets her fiancé’s younger brother, a brooding baker who blames him for the loss of his hand. In 1987 Norman Jewison made a boisterous Brooklyn comedy in which the opera matters as much as the wedding, and Cher won an Oscar for the role. The film is part of a weekend of romantic classics at Tomorrow Theater. For those who believe love should be a little crazy.