Final answer:
The main question throughout the book is 'How far should a person go for love?'
Step-by-step explanation:
The main question throughout the book can be summarized as follows: How far should a person go for love? This question is explored through various characters and situations in the story. For example, questions like 'What's the alternative?' and 'Is this the movie version, or the real-life one?' suggest that the characters are grappling with the idea of sacrifice and the lengths they are willing to go for love.