"Por Si No Vuelves" is a love song by Jon Secada that expresses the pain and longing of a person who has been left by their loved one. The lyrics reflect how this person is unable to forget about their lover, and they keep on dreaming about receiving a call from them. The narrator admits to being lost and sleeping through life, hoping for a sign of their lover's return. They wonder about their ex's life and admit that there was never a proper goodbye. Despite this, they hold onto memories and refuse to let go of their love. The song's chorus repeats the phrase "Por si no vuelves" which means "in case you don't come back." The narrator is preparing themselves for the worst-case scenario where their lover never returns, promising to be happy even if it's with someone else, but still remembering and holding onto the memory of their ex. The song conveys the pain and sadness of heartbreak but also touches on the strength and resilience one can possess when they face such adversity. It's a poignant song that speaks to anyone who's ever been left behind in love.