This is so sad and sweet and perfect and the angst lover in me can't help but love the doomedness of this pairing. I love how it's perfectly plausible as canon--I always think it could explain a lot of why Percy went 'round the twist in OOTP.
I love seeing Cedric being the hero-worshipper here, and, oh, Percy's little smile after Hufflepuff won Quidditch matches, and them sitting in the overgrown grass at the Burrow. Yes. ♥ So much to love here.