"When it's right, it's simple," from Stephanie Perkins' book Lola and the Boy Next Door, highlights the idea that true love or meaningful relationships are uncomplicated when they are genuine. It emphasizes that the core of a strong connection doesn't require complex conditions or displays, but instead relies on authenticity and feeling right naturally.

This quote suggests that when relationships are authentic and aligned with one's feelings, they become effortless and straightforward. It encourages embracing what feels right, trusting that simplicity follows when love or connection is true and honest.