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3. Dovunque al mondo ("Throughout the world"). With echoes of the Star Spangled Banner, Pinkerton tells Sharpless that, throughout the world, the Yankee wanderer is not satisfied until he captures the flowers of every shore and the love of every beautiful woman. "So I am marrying in the Japanese style: for 999 years, but with the right to cancel the marriage each month". Sharpless is critical of Pinkerton’s beliefs, but they stand and agree, "America forever". Pinkerton tells Goro to bring Butterfly to him. When Goro leaves, Sharpless asks Pinkerton if he is really in love.
4. Amore o grillo ("Love or fancy"). Pinkerton admits to Sharpless that he does not know whether he is really in love or just infatuated, but he is bewitched with Butterfly’s innocence, charm and beauty, like a butterfly fluttering around and then landing with silent grace, so beautiful "that I must have her, even though I injure her butterfly wings". Sharpless tells Pinkerton that he heard Butterfly speak, when she visited the Consulate, and he asks Pinkerton not to pluck off her delicate wings. However, Pinkerton tells Sharpless that he will do "no great harm, even if Butterfly falls in love." Sharpless takes his glass of whisky and offers a toast to Pinkerton’s family at home, to which Pinkerton adds, "and to the day when I will have a real wedding and marry a real American bride." Goro re-enters to tell Pinkerton and Sharpless that Butterfly’s friends are coming.