In 'Pride and Prejudice', Mr. Darcy can be seen as a bit of a 'bad boy' at first. He was proud and aloof. Elizabeth Bennet, the good girl, was initially put off by him. But as the story progresses, Darcy changes. He becomes more humble and shows his true good nature, influenced by Elizabeth's strong character. Their relationship is a classic example of a transformation from a rather 'bad' start to a positive and loving one.
Another example is in 'The Great Gatsby'. Jay Gatsby was a bit of a bad boy in the sense that he was involved in illegal activities to gain wealth. But his love for Daisy, the good girl in a way (though she had her own flaws), made him want to be better. He threw grand parties hoping she would notice him, and in his pursuit of her, he was trying to leave his past behind and become a more acceptable person in her eyes.
In 'Jane Eyre', Mr. Rochester was a rather complex character with a dark past, which could be considered 'bad boy' traits. Jane Eyre, the good and moral girl, entered his life. Her pure and strong - willed nature influenced him. Despite the many obstacles, in the end, he was transformed by her love and his own realization of how he should be. Their story shows how a good girl can have a profound impact on a man with less - than - ideal qualities.