The song "Esisto Io" by Marina Rei is about the desire to leave a space in the mind for the moments of love and to think freely about a loved one. The lyrics express the longing to re-embrace and reconnect with the person when they return. The singer reflects on the idea of existing because of the other person, and the importance of getting to know them. The song also touches on the idea of wanting to know less about the past and the desire to escape and start over. Overall, the song conveys the emotions of hope, laughter, and the experience of getting lost and found again.