Perfection is quite difficult to achieve in all fields of life at the same time. If a person is perfect in one thing then it is quite obvious that he might have sacrificed in another zone. This goes on with almost every person in the world and for everyone, there is something that he lost in life. Quinn and Graham also face these problems in life during the story and it slowly starts to catch up on them within no time.
They come to a stage in life when they start thinking that their marriage is finally going down. They are not able to live together anymore. They thought that their love was the first perfect thing they achieved in life but their marriage was not that successful at all. At this stage, the only way they can rise in life is by getting rid of the relationship which they call marriage. There is no future for them as a married couple but the promises which they once made in the past still exist in their mind.