DICLAIMER: I do not own Harry Potter, or the Harry Potter world, or related characters, or blah blah blah.
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He had felt embarrassed the first time he'd met her. She had pointed out the dirt on his nose, no doubt dismissing him because of it.
By the end of his first year, he had liked her. But not really known her.
By the end of second year, he had been scared for her, worried for her, happy for her and proud of her.
By the end of third year, she had been a great friend. And he had considered her for something else.
By forth year, she was his best friend other than Harry. He really, really, liked her. More than he should. But it was normal to feel this way when she went out with another boy, just a friendly feeling…
By the end of fifth year, he felt like he knew her better than anyone could ever know anything else.
By the end of sixth year, he knew that he was in love with her.
And now it was seventh year. He gone through almost every emotion for her, and he would have done anything.
She picked up his homework and started correcting it. He could imagine her thinking: Ronald is useless. He gets everything wrong. I have to make it better for him.
He'd come back with a sharp retort, and ran up to his dormitory.
He would be nothing without her.
So he ran away, because it scared him, and he died a little more inside.