I found this clever and moving.
Postcard To Dear Ex
A downloadable spell
In this game you will write a postcard to an ex you hold dear.
The game rules fit a postcard. You can print and mail the rules if you want, but not to your ex. The rules will instruct you to write another postcard. This second postcard you will never mail.
The download is a PDF with the same images available as screenshots in this page. Written for Wish You Were Here: A Postcard Jam, May 2021.
To install this game as a healing spell, dispatch it as per final instruction.
If you don’t want to cast spells, skip the last step.