This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated.

A Michigan couple who married nine years ago said the best wedding gift they received sat unopened in their closet until just a few months ago.

Kathy and Brandon Gunn shared their story last week in a post on the ‘Love What Matters’ Facebook page.

The couple received the gift from Kathy’s great Aunt Alison in a plain white box with a card that read, “Do not open until your 1st disagreement,” according to the post.

Although the Gunns said they’ve had plenty of disagreements through the years, they never opened the box.

“I honestly think that we both avoided turning to the box, because it would have symbolized our failure,” Kathy Gunn’s post explained. “To us, it would have meant that we didn’t have what it takes to make our marriage work – and we’re both too stubborn and determined for that. So, it forced us to reassess situations.”

Recently, with a wedding coming up, the two sat down and tried to think of a gift for the newlyweds. They realized their favorite gift from their own wedding was the one they never opened.

“Today, we decided to open that box, because I finally had a realization. I realized that the tools for creating and maintaining a strong, healthy marriage were never within that box – they were within us,” the post read.

When the couple finally opened the gift, they found items like wine glasses and notes and money. Brandon Gunn’s note told him to use his money to buy flowers and wine, while Kathy Gunn’s note told her to buy pizza and get a bath ready.

“All along, we assumed that the contents of that box held the key to saving a marriage – an age old trick – unbeknownst to us rookies,” the post said. “After all, my Great Aunt and Uncle had been married for nearly half a century. So, we thought the box would save ‘us’ – and in a way it did. That box went beyond what I believe my Great Aunt had intended. It was by far the greatest wedding gift of all.”