It's a different sort of love taht puts up with illness. Old love.
In "The Right Attitude to Rain," Alexander McCall Smith explores the nuances of love, particularly in the context of enduring challenges such as illness. The quote highlights a form of affection that is resilient and rooted in deep familiarity. This "old love" signifies a bond that withstands difficult circumstances, showcasing dedication and a profound understanding of one another over time.
The idea conveys that true love is not just about romantic notions but also about companionship and support during tough phases. It portrays a mature relationship where partners stand by each other, demonstrating that genuine love is often tested and strengthened through life's adversities.