In this novel, the wife is a central figure. She is the one with the emotional turmoil and is the narrator in a sense as the title is addressed to the mistress from her. The husband, who is being unfaithful, is another main character. And the mistress, the person who has entered into this inappropriate relationship with the husband, is also a main character.
Well, you could try doing things he likes together to strengthen the bond. Also, showing appreciation and support for him can go a long way. Sometimes, small gestures of love and care can make a big difference.
One way could be to have heart-to-heart conversations regularly, listen to his perspective, and work on resolving any conflicts together. Surprising him with small gestures of love and support might also make a difference.
One common theme could be betrayal. The very existence of a mistress in a relationship implies betrayal by the husband. Another might be the wife's struggle. She could be grappling with her emotions, like anger, sadness, and confusion. Also, self - discovery could be a theme as the wife might re - evaluate her life and her identity in the face of this situation.
To win over your husband in a manhwa, first, focus on building trust. Be supportive of his dreams and hobbies. And don't forget to show appreciation for the things he does for you.