Unless you've been raising your kids on another planet, you've probably heard of Robert Munch's classic children's book Love You Forever.
In fact, you're probably sick of the story after reading it over and over to your own kids. But just in case you need a reminder, it's about a mother who sings the same song to her son at different stages in life. At the end of the book, the boy (now a grownup) holds his elderly mother and sings back the same song.
Parents everywhere fell in love with the classic story, illustrator Sheila McGraw's art, and the beautiful message that you will always love your kids, even if they get on your nerves sometimes.
Since 1986, millions of copies of the book have been sold, and it reached number four on Publisher Weekly's list of best-selling children's books. But there's a tragic story behind the book that most parents know about.
It was to do with the song repeated throughout the book:
I'll love you forever, I'll like you for always, as long as I'm living my baby you'll be.
It turns out that song had a special meaning for Munsch and his wife, at a time in their lives when the author was so sad he couldn't even bring himself to cry.