Man's Sister Causes Embarrassment with Neighbors, Gets Kicked Out?

Living in a friendly neighbourhood can be a blessing, especially when your neighbours are kind and considerate. For one man (31M) who has lived in his current home for two years, the weekends are a time for relaxation and socializing with his neighbours. However, this changed when his sister (27f) moved in after having problems with her boyfriend. She found the weekend gatherings of the neighbours annoying and insisted that they were disturbing the peace with their loud music. After the man reassured his neighbours that he had no problem with their gatherings, he was embarrassed to find out that his sister had complained to the neighbours, pretending to be his wife. The man later told his sister to find another place to stay, which has caused a rift between him and his family. While he feels justified for not wanting his sister to cause problems with their friendly neighbours, he also feels guilty for not helping his sister. What do you think? Is he an a\*\*hole for putting his neighbours first or is he just being a responsible neighbour? Share your thoughts in the comments below.