In the book "Watermelon" by Marian Keyes, the protagonist experiences a moment of profound realization about her relationship. The lack of a smile from her partner signifies a deep disconnect, signaling to her that their bond has eroded. This moment is pivotal as it marks a turning point in her understanding of their emotional distance.

The quote encapsulates a feeling of loss and resignation. It highlights how nonverbal cues can often speak louder than words, revealing the underlying issues in a relationship. The protagonist comes to terms with the reality that their connection may no longer exist, reflecting on the grief attached to love that has faded.