In A Doll's House, there is a theme of woman and man. These two are distinct in this play. There is the role of the man and role of the woman. The woman does her best to please her man. She gets her self worth out his possessive needs. Nora does everything she can to please Torvald. She plays along with his nicknames for her. She dances for him. She buys things such as fine wines to assure they are in a upper class setting. She sacrifices her own happiness for the man she loves.
On the other hand, Torvald thinks he is the sole is the provider. He is unappreciative of Nora's sacrifices. He keeps her barefoot and pregnant where he thinks she belongs. He is unwilling to sacrifice his reputation for the woman he loves. He is only concerned with appearances and is quite happy trying to keep up with the Jones.
In A Doll's House, there is woman and man. These two are not as one, as should be husband and wife. These two live separate lives in terms of affection. Nora tries to play Torvald's games, but she eventually tires. When she walks out on him, he regrets not keeping her by his side as his beloved wife.