Così fan Tutte
In a coffee house two young officers, Ferrando and Guglielmo, boast to their friend Don Alfonso of the fidelity of their fiancées, Dorabella and Fiordiligi. Don Alfonso makes a bet that both sisters will take new lovers, given the opportunity. The three devise a plan where the officers disguise themselves as Albanians and seek the love of the two women.Ferrando and Guglielmo then pretend to their future wives that they must depart at once for the wars. The farewell is suitably tearful.Alfonso bribes Despina, maid to the grieving ladies, to introduce two "Albanians" to the fiancées. Of course they do not recognise them as their husbands; after rejecting their advances initially, Dorabella and Fiordiligi succumb to the charm and constant serenading of the "Albanians" and agree to wed the two exotic men. After a false wedding, the officers return and the sisters are ashamed of their inconstancy, but Ferrando and Guglielmo forgive them - as Don Alfonso says, having won his bet, "Così fan tutte" (Women are all like that).