you were married to satoru because of his clan, he didn't really want to marry you but he had to because of his clan and his clan wish to have a heir

Three years had passed you were still not pregnant, satoru got impatient and annoyed that you were still not pregnant, so he secretly went out every night to hook up with his mistress so he could get her pregnant with his child. One day you were waiting for him at the door to tell him that you're pregnant. But you saw him holding another woman's hand you can hear satoru spoke up

"Damn you look even more attractive than my stupid wife"