(Passionately) is a comédie musicale[1] in three acts with music by André Messager to a French libretto by Maurice Hennequin and lyrics by Albert Willemetz.

Distrustful of Frenchmen, Stevenson makes his wife Ketty (a former music-hall star) to show herself in public as an old woman, with white hair and tinted glasses; he forces her to swear this on the Bible.

Later, Ketty, without her disguise, meets Robert, and pretends to be the niece (Marguerite) of the brutish and teetotal Stevenson; they begin to fall in love.

Act 2 Trouville, in an elegant salon of the Villa des Roses The yacht has had to be put into dry dock for repair.

The three bottles have also made him become kind, considerate – and aware of the beauty of Julia… The two lovers take advantage of this change, and get Stevenson to reveal the riches of the Colorado terrain, and to divorce Ketty so that she and Robert can get married.