Factual error: At the beginning of the movie, we find out that Holly and Gerri were married when she was 19. She then turns 30, so at least 11 years have passed since the day that they met. However, when Holly sees Gerri in the pub on the day that they meet, he sings "The Galway Girl". This song was not written by Steve Earl until 2000, and they must have met sometime around the year 1996.
Continuity mistake: After Holly and Gerry’s argument near the start, when Gerry begins his little dance in boxers, as he removes his leather jacket one of the back suspender clasps comes undone. When he lies down beside Holly, both back clasps are on properly. (00:10:45)
Holly Kennedy: That's a real honest to goodness couple right there. They've probably been together since the flood.
Daniel Connelly: We're so arrogant, aren't we? So afraid of age, we do everything we can to prevent it. We don't realize what a privilege it is to grow old with someone. Someone who doesn't drive you to commit murder or doesn't humiliate you beyond repair.
Trivia: In one of the letters that Gerry sends Holly about choosing a future career he says "and there's no such thing as a Vampire Slayer". Funny statement since one of the stars of the film is James Marsters, who is famous for his role as Spike in Buffy the Vampire Slayer.