In the weeks and months that follow, more letters from Gerry are delivered in surprising ways, each sending her on a new adventure and each signing off in the same way; P.S. I Love You.

Relive all the heartwrenching emotions from "P.S. I Love You" with this guide to the movie's filming locations across Ireland. If you're looking for the perfect Valentine's Day tearjerker ...

And each one, signed PS, I Love You, contains instructions that he hopes will help Holly come to terms with her grief and move on. Speaking about the sequel with Stylist, Ahern explains ...