In "Avenue of Mysteries" by John Irving, a character named Vargas grapples with the complexities of loyalty and desire. He faces a moral dilemma regarding faithfulness, particularly considering his relationship with Dr. Gomez. Despite any feelings he may have for another woman named Lupe, Vargas is depicted as someone who prioritizes physical connection over emotional commitment.

This situation raises questions about the nature of fidelity and the expectations placed on individuals in romantic relationships. Vargas's mindset reflects a more liberal view of relationships, suggesting that he feels no obligation to remain faithful to someone with whom he has not shared an intimate bond. His focus on his desire for Dr. Gomez further complicates the dynamics of trust and commitment in the story.