Marchitan means "wither" or "fade". It's a vivid and somewhat melancholic verb, often used to describe plants losing their vitality, but here it's applied to something much more abstract.
In the song, the lyrics "Las hojas de este amor marchitan" (The leaves of this love wither) use this word metaphorically to describe the fading of a relationship as time passes, specifically linking it to the arrival of November after a summer romance. It beautifully captures the feeling of a love that is slowly dying.
"Vuelves" is a love story told through the changing seasons. Spring arrives, luck flips, and the romance blooms like freshly opened roses. Promises of para siempre sparkle under the summer sun, yet when September sneaks in, the petals start to fall. By November, the relationship seems as dry as autumn leaves, but the singer refuses to turn off the porch light. Every "yo sé que vuelves" is a confident whisper that their true love will find the way back home.
What makes the song so engaging is its mix of melancholy and unbreakable hope. Even if friends label the waiting as madness, the narrator would rather "live on lies than die without seeing you." They place their entire life—and even this very song—on the bet that real love never leaves for good. That fierce optimism, wrapped in upbeat pop harmonies from Sweet California and CD9, turns heartbreak into a catchy anthem of patience, faith, and everlasting devotion.