This is an unethical situation for several reasons. Firstly, if it's not within the boundaries of a consensual, healthy relationship, it's wrong. It could be seen as a form of sexual harassment or inappropriate behavior. Morally, we should strive to build relationships based on mutual respect, love, and understanding, not on taking advantage of someone who happens to be nearby. In many cultures, this kind of behavior is frowned upon as it violates the values of propriety and respect for others' autonomy.
The book 'The Girl Next Door' is a true story. This means that the events, characters, and situations within the book are rooted in reality. By being a true story, it has the power to evoke strong emotions in the readers because it reflects real - life situations. It might deal with various aspects such as relationships, personal growth, or challenges faced in a particular environment, all of which are based on actual events.
Perhaps the story is about her facing difficult circumstances and emerging stronger. Or it could be a story of love and sacrifice that changed her life forever.