the letters of wednesday

i recently checked out this book called "the wednesday letters" at the library. it's christian fiction about a couple who was married for like 40 years and every wednesday the husband would write the wife a letter. they kept all the letters and the book is about how the children go through them and it tells a story about their journey of marriage for so long.
not sure if this is a real known book or concept but i had never heard of it. even though i ended up not interested in reading the book after a few chapters (plus i can't really be too distracted when i have to babysit so many kids. these kids are just waiting for a chance to do something crazy. you should see them when i just go to the bathroom!) i loved the idea of a couple doing this. i told my husband about the book and he thought it would be a cool idea for us to try. so now on wednesdays we are both taking a little time out of our day to write down a few thoughts, ideas and feelings in a notebook and we will keep them hopefully forever. he writes mine in a transformers notebook. i think that's pretty sweet.