repinned, repined

Repinned or repinned is the past tense ( yesterday, or some time ago ) of "repin", meaning to fasten or attach, again, with a thin sharp piece of metal, or the figurative equivalent --
The pattern came loose, so I repinned it.
She repinned one of the recipes that I shared.

Repined or repined is the past tense ( yesterday, or some time ago ) of "repine", meaning to mope or to be dejected --
He repined at the loss of his Summer romance.
It was useless, but he repined over the verdict for weeks.

Now that you know that, you can say--
"He sat and repinned the ribbon to all of her old letters, and repined at the loss of his youth."