 Commentators have also noted the song " Faithfully " that accompanied the book . The Petersons criticized it , arguing that its lyrics suggest that singles should seek a kind of unachievable perfection in their future marriage and spouse . On the other hand , in Eyes Wide Open : Avoiding the Heartbreak of Emotional Promiscuity , Brienne Murk , a Christian musician and public speaker , identifies " Faithfully " as one of her favourite songs . 
