…She had been perfectly happy before she had met him; indeed she had been even slightly happier then. So the inscription might more accurately have read: "To remind you of how happy you've been in Edinburgh, in spite of the memories of me." But people never wrote that sort of brutally honest thing in books, largely because people very rarely have a clear idea of the effect that they have on other people, or can bring themselves to admit it. And Bruce, as Sally had discovered, lacked both insight into himself and an understanding of how somebody like her might feel about somebody like him…
The quote reflects on the complex emotions intertwined with relationships. The character recalls a time of happiness before meeting someone who altered her perspective. Instead of celebrating their connection, there's a sense of nostalgia for the joy she experienced independently, suggesting an inclination to forget that intense happiness when love or dependence complicates emotions.
The passage also touches on the idea that people often struggle to accurately assess their impact on others. It highlights Bruce’s lack of self-awareness and understanding of Sally's feelings, which ultimately complicates their relationship. This theme implies that personal insights and empathy are crucial for healthy interactions and understanding in relationships.