What should I do if I find my father-in-law having an affair and pretend not to know?

Leave him alone. This is not your duty.

Just married my husband for three months, I accidentally saw my father-in-law charging his mobile phone and received a short message with abnormal relationship. Mother-in-law can't read, so she won't go through her father-in-law's mobile phone. When I told my husband about this, I had to say that men have big hearts. He never found anything wrong with his father.

I thought about it and didn't tell my mother-in-law.

First, I am a daughter-in-law, not a daughter. I said it might be thankless to sow discord between parents-in-law.

Second, although my father-in-law has three sons outside, he is very kind to his children and grandchildren. I don't need to spoil the family atmosphere now.

Third, I'm not sure if my mother-in-law knows, but after so many years of husband and wife, she may be suspicious even if she doesn't know, unless she is stupid. If she knows that her mother-in-law didn't choose it herself, why should I be a villain? If she doesn't know, then why should I put my mother-in-law in this position?

Later, I got along with my mother-in-law for a long time and slowly said some confidences. Mother-in-law said that she actually knew everything about her father-in-law, but she didn't want to say it too clearly. Grandson is so old, she is afraid of bad reputation for herself and her father-in-law. Besides, they have been well for so many years, as long as they don't take it home. For most of my life, the couple's feelings have disappeared, and they have not insisted on taking care of their families.

Our situation is similar. I think you'd better not say that no matter what your father-in-law does, it has nothing to do with your small family. As you said, my husband and mother-in-law don't believe me. Your mother-in-law and father-in-law are the closest relatives. Maybe she doesn't know? I don't believe it, but I just don't want to admit it. They are also Zhou Yu's Huang Gai, one willing to fight and the other willing to suffer. Don't worry too much, live your own life and take care of your husband.