The relationship between sister and brother-in-law is not harmonious ~ how to persuade?

Not to throw cold water on you. You really can't come up with an idea about this matter, and you can't start. Obviously, this problem only lies with the brother-in-law, including his family. There is nothing wrong with them. They asked him for money, but he could say no. Because of his indulgence, he can't live now and can't explain to his wife. He is a husband. He can't get through this in his own heart, and what others say is useless. I don't think he can pull it out. My sister wanted to leave because there was nothing she could do about it, so she chose to escape. You can convince your girlfriend that your brother-in-law is so sad because he neglected his other half. Would you do the same thing to me? If you are really worried about your sister, I can recite it for a short time. If it takes a long time, you won't treat me like your brother-in-law treated your sister. Please think for me, too. See if I can keep my wife.