Love
Ginny knew love. It was all around her at the Burrow. Her parents loved, her brothers loved her, everyone loved her. But they all loved her in different ways.
Her parents loved her as their daughter, their one and only. They had six boys, who could blame them for cherishing their little baby girl when she finally came along? They doted on her. Arthur worshiped her as a princess, granting her every wish whenever he could. Molly paid her the most attention, when she wasn't busy with house work or keeping six boys in line. She taught her household spells and about how to be a lady, something that was over ridden by her brothers teaching her how to be a boy.
Bill, as the oldest, loved her as the youngest. The baby of the family (thank godric). He looked out for her. Made sure that the other boys didn't get to rough with her. He taught her how to climb trees and fly a broom. He even taught her the bat bogey hex that she would become famous for.
Charlie loved her as his only little sister. He was detached from her like he was with the whole family. But still, he loved her. She was after all his only sister. Occasionally he would ruffle her hair or poke her in the ribs. By day, he was pretty much the most distant of the Weasleys. But by night, he was the one who came to her when she cried out at night. He was the one who held her and lulled her back to sleep after a nightmare.
Percy loved the idea of having one more chance to mold a small mind into thinking like he did. It didn't work. He had hoped to turn at least one of his younger siblings into a miniature of himself. Little did he know that when they got older Ginny would be the one most hurt by his betrayal.
The twins loved her as someone they could test their pranks on, but would still be the firsts in line to beat up anyone who tired to do anything to hurt her. No one was allowed to do anything cruel to their sister unless they where family. And even then the twins were the ones with the monopoly in that area.
Ron loved her most of all. For the first ten years of her life they had been each others best friends. And even now that they had their own best friends they were still the closest of the seven children. Ron protected her from boys: who would break her heart; girls: who would wound her pride; and even Voldemort himself: who would posses her for his own evil ends.
But even with all these different kinds of love, Ginny had never known romantic love. Well that is until Harry.
Harry showed Ginny a love that surpassed all other. He held her close when she cried; basked in the light she cast when she laughed, and watched her while she slept. But most of he loved her. He loved her for who she was and who she would become. Harry stopped being The Boy Who Lived and became the boy who loved her.