Prior to the wedding, you gather a strong wooden wine box, a bottle of wine and two glasses. Then, also before the ceremony, you both sit down separately and write love notes to each other, explaining your feelings on the eve of your wedding day. Each letter then gets sealed in its own envelope. You do not read your beau’s letter.
Then, at some point during the ceremony, your officiant explains the process, and the two of you seal the box by taking turns hammering in one nail at a time until the box is closed.
You don’t open the box until your 10th anniversary (or really whatever anniversary you choose. Either way, on the day that you open the box, you both read the letters and drink the wine, remembering how you both felt just days before your wedding day.