First of 3 ficlets I've written recently. Thanks to ladybluestar for the beta!
Prompt: Time does not stand still, but you're with me just the same.
Looking back, it felt like they had spent their whole lives together. Well, when you live over 150 years, the first 11 or 12 do not seem very significant. Besides, Harry preferred to forget all about his time with the Dursleys and unfortunately, he could not remember the 15 months he had with his parents before that.
She had a happy childhood, but her parents were her only "friends," until Harry jumped on a troll to save her life. Part of her had loved him ever since then.
They had gotten together during the summer after Sirius’ death. Hermione had realized that Harry needed to grieve and that to do so successfully, he would need help other than his vile relatives. So, she disobeyed Dumbledore's ridiculous order to leave Harry alone and called him. Being Muggle-born, she was able to speak normally on the phone and Petunia begrudgingly allowed Harry to speak with her.
Their relationship had tests of course, but they lived a long and happy life together with their dozen children. Teddy Lupin was the oldest, Harry having adopted his godson shortly after his parents' tragic deaths. Hermione was the first Muggle-born Minister of Magic, and she became such while pregnant with her eleventh and twelfth children, twin girls named Dorea and Rosemary.
Back when they were looking for safe ways to destroy Horcruxes, Hermione and Harry were admitted to the Library of Alexandria through connections with Monsieur Delacour. She had to learn several languages to translate relevant works. In Arabic she found the word that best described her feelings for Harry and his for her: Ya’aburnee: "Both morbid and beautiful at once, this incantatory word means “You bury me,” a declaration of one’s hope that they’ll die before another person because of how difficult it would be to live without them."
Of course, this was selfish, since she did not actually want him to have to grieve for her either.
In the end, both of them got their wish. They passed away peacefully at the ages of 176 (him) and 177 (her), surrounded by dozens of their descendants. (By then they had great-great-great-great-great grandchildren.) No one could tell which of them had stopped breathing first, but they passed holding hands, with contented smiles on their faces.