She and he were never lovers, only a little bit of ambiguity.
She and he were not friends. She couldn't even say "we are friends".
They just stumbled and tried to support each other through the greenest and best years.
When she met him again, their eyes intertwined, and she suddenly felt that her smooth life had fallen into an unfathomable abyss of sweetness.
This is not a simple male best friend, but a vague new green in life, which cannot be explained.
Have you ever understood that boy?