When they had first met, he had been a dirty, rusty little cube and she had been as pristine as a pearl.
Time passed. Days, then months, then years, then decades, then centuries. He continued to rust and age, losing the last flecks of his yellow paint completely until his body was a brownish-gray from head to tread. If one were to look close enough, they could even see beneath his metal plates. She began to gray as well, the shimmering sheen that had once marked her as something new and exotic dulling into nonexistence. The pure white that formed her body gradually darkened into a bland silver, the electric seams that composed her magnetic structure all the more evident for its absence.
As it did with all things, time destroyed their beauty.
Yet they never truly noticed. They never stopped watching the Sunset together. They never stopped holding hands. They never stopped sharing that magical spark which felt as wondrous and magical now as it had when first they had experienced it. They stayed with each other, always. The world changed around them, aging and dying and being reborn a hundred times over, and still they stayed.
As it did with all things, time ended for them both.
Yet what they shared...what they felt...never ended at all.