This is by H28 on onedirectionfanfiction.com it's wonderful and I hope you like it as much as me. Recommended for 17+

He never knew life could be this way, but truly if he did, he wouldn't have cared. He cared about nothing, not even himself until her. Before her, he was empty/ Before her he knew nothing of joy or completion, and this is his journey to his life After her.