He did not do that to insult him? Friends. He lives happily. Because he thought that he had a sister, and the family is worried about him and love him enough.
He is not interested in whether a friend would insult him? They live happily because he thought he was just a sister and their families who are concerned about him and love him enough.
He did not care that he was a friend to see how he uses a happy life because he thought that he was only with her sister and her family who were worried about him, and love him, he had enough.