In the novel "Atonement" by Ian McEwan, the character expresses profound love and unwavering faith in another person, indicating a deep emotional connection. The speaker conveys that their love is not only strong but also central to their existence, highlighting the importance of this relationship in their life. This powerful sentiment reflects a sense of devotion and attachment that defines their purpose.

The quote emphasizes the intensity of their feelings, showcasing how belief in a loved one can bring meaning and motivation. The phrase "my reason for life" encapsulates the idea that love can serve as a guiding force, deeply influencing one’s identity and choices. Such expressions of affection and commitment are crucial themes throughout the novel, illustrating the complexities of love and connection between characters.