In the face of his wife's immoral behavior, King Schahriar did not react with violence like his brothers. Instead, he sensibly left the palace to seek out the root of the problem, indicating that the king's heart was still fond of his wife. I speculate that the two brothers may have had a sexual dysfunction disorder.
RE: One Thousand and One Nights: The Story of King Schahriar and his brother King Schahzaman: Part Three