"I love you. I will love you till the stars crumble" expresses a profound commitment and enduring devotion that transcends typical romantic promises. Unlike the common hyperboles found in love stories, this quote suggests a deep, unwavering connection that suggests a sense of urgency and permanence, especially in the context of parting.

In Robin McKinley's "The Hero and The Crown," this line reflects the tension and intensity of love in the face of uncertainty. It underscores the idea that true love can withstand trials, hinting at the strength of feelings even when lovers must separate. The oath to love beyond the cosmos conveys a loyalty that adds a layer of poignancy to their relationship.