One of the most distinctive features of He olvidado decir adiós is its use of alternating first-person narrators. Each chapter shifts between the perspectives of protagonists Paula, Álex, and other secondary characters. This technique serves two functions:

The book is divided into two main sections: (What we were) and "La herida" (The wound). It incorporates collage-style imagery to complement its poetic journey, which captures the fragility of memories and the lingering pain of an unfinished goodbye. Key emotional themes include: