In Alice Munro's "Lives of Girls and Women," the author explores complex themes of love and emotional detachment. The metaphor of love going "underground" likens it to a toothache that persists but is not immediately acknowledged. This suggests a deep-seated yearning for connection that is often repressed, possibly due to societal pressures or personal experiences. Such feelings impact the protagonist's relationships and self-identity throughout her journey.

Munro's narrative emphasizes the struggles of young women navigating their desires and the realities of growing up. The reference to love's hidden nature signifies the internal conflicts that many experience. It highlights how love, while a fundamental human need, can be overshadowed by pain and confusion, making it difficult to confront and embrace. This nuanced portrayal invites readers to reflect on their own experiences with love and the complexities that accompany it.