In Marian Keyes' novel, "The Brightest Star in the Sky," a common belief is challenged: that love can transform even the cruelest of individuals. The story highlights the disillusionment that can come when one invests their hopes in this notion, only to face the harsh reality that love alone may not be enough to change a person's fundamental nature.

This sentiment resonates deeply as it reflects the pain of unreciprocated love and the heartache that arises when expectations of change are met with continued cruelty. Ultimately, it serves as a poignant reminder of the complexities of human relationships and the challenges of loving someone who may not be capable of reciprocating that love in a way that heals or redeems.