Do you love your wife?

Ji-yeong has been married for 5 years. She is the wife of a doctor named Min-ho who doesn't have sex with her. They used to heat things up when they were dating but that's all gone now. Min-ho is having an affair with Bo-yeong from the same hospital. Will this couple find their happiness? "The wife is family. How do you have sex with family?" "I don't have sex with my wife."