It's also because she tells another suitor (Prince Yamadori) that she is still a happily married woman when she is not. Basically Pinkerton marries Butterfly and leaves her, but then returns again after three years with his new wife Kate.
The endings for the ing'nues are very different indeed. While the Count and his servant bring a ladder into Bartolo's house, the Count demonstrates his true nature to Rosina and basically they are not angry at each other anymore.
Butterfly replies that she would probably go back to being a geisha, or perhaps die-which would be better. Butterfly then lets Sharpless in on the secret-she has a young son that was Pinkerton's issue.
There is a loud boom in the distance. Butterfly can tell Pinkerton's ship is coming near, and she is sure that Pinkerton is returning for her; however, as one shall see, this is not going to be a very auspicious meeting for Butterfly.
Pinkerton was an American naval officer who took over a house in Nagasaki. Originally, his plan was to live in Japan with his wife Butterfly. Butterfly (named Cio-Cio-San) is an entertainer, actually a geisha.
The matchmaker named Goro, as he is letting Pinkerton see his new environs, lets Pinkerton become introduced to his wife's maid, Suzuki. ...