The quote from Larry McMurtry's "Anything for Billy" suggests that love is a distinct experience, characterized by its own emotions and reactions. It implies that the moments of affection, like kisses, are often followed by deeper feelings, represented by sighs. This connection underscores the complexity of love, where initial expressions lead to profound emotional responses.

Moreover, the phrase highlights the natural progression in romantic relationships. Kisses symbolize the tender beginnings of affection, while sighs may signify longing, contentment, or nostalgia. By acknowledging these emotional stages, McMurtry captures the essence of love's journey and its inherent depth, showcasing how intimate moments can evoke a broad range of feelings.