I get a little giddy thinking about this one because the title pops up in so many places, but here's the clean take: the best-known film is 'Truly, Madly, Deeply' — the 1990 British movie written and directed by Anthony Minghella and wonderfully acted by Juliet Stevenson and Alan Rickman. That film started life as an original screenplay, not as a novel, so it's not a film adaptation of a preexisting book. People often assume it must have been based on a novel because of its literary-feeling dialogue and emotional depth, but it was crafted for the screen first and then became
Beloved on its own merits.
Confusingly, the phrase 'truly madly deeply' has been used
Elsewhere — there are
romance novels and contemporary books that reuse the phrase in their titles, and then there’s the famous Savage Garden song 'Truly Madly Deeply' (1997) that solidified the expression in pop culture. Those books and the song are separate creations and aren’t the source material for Minghella’s film. I’m not aware of any high-profile film adaptations that
took a novel called 'Truly Madly Deeply' and turned it into a movie; most cross-media links run the other way (film to novelizations or simply shared titles).
For me, the film still feels like a tiny miracle of writing and performance — intimate, melancholic, and oddly comforting. If you’re
searching for a novel with the same emotional punch, you’ll find plenty of books that chase similar grief-and-love territory, but they won’t be the original text behind that particular movie. It’s a neat reminder of how a phrase can float between songs, books, and films and mean slightly different things in each, which I love.