In "Sonnet 138," Shakespeare explores the complexities of love and truth, where the speaker acknowledges the dishonesty in their relationship yet chooses to believe in their partner's declarations. The sonnet reveals a delicate balance between acceptance and self-deception, reflecting the pressures and expectations of romantic ties. The opening lines underscore this tension, highlighting the speaker's awareness of the lies but his willingness to overlook them for the sake of love.

James Shapiro's "The Year of Lear: Shakespeare in 1606" contextualizes this sonnet within Shakespeare's life and the societal norms of his time. It emphasizes how personal relationships influenced Shakespeare's work, showcasing the contrasts between public persona and private realities. The sonnet ultimately serves as a poignant meditation on the nature of affection, fidelity, and the narratives people construct to maintain emotional connections, regardless of their authenticity.