I am looking for romance books, please help!?

My favourite stories are like the girl is food and the boy is a rogue and he hurts her but at the ends realizes his mistakes and makes up to her but sometimes something happens to the girl and then he realizes his mistakes like for example in historical romance a duke marries a girl only for prupose of producing an heir, through the story he hurts her, insults her but when she is giving birth something goes wrong and the duke gets scared and realizes that the girl is his life and they have happy live after something like this