Disclaimer: J.K. Rowling owns these characters; I do not.
Quidditch meant a lot to Cedric Diggory. He would discuss it all day with his friends, arguing about which team was better, ranting about how much better Quidditch was than Swivenhodge or Quodpot, discussing tactics with the rest of the Hufflepuff team.
He loved to play Quidditch, but he also liked to watch it. The last Quidditch World Cup was wonderful. He wished it could have been longer, but he still delighted in seeing professionals play, ashe hoped that he could play professionally one day. He knew that Cho shared the same dream.
He thought of Cho. She was one of the reasons that inspired him to enter the Triwizard Tournament; he'd hoped to impress her.
The first time he really noticed her, she was riding a broom, playing on the Ravenclaw Quidditch team while he was playing on the Hufflepuff team. He noticed how her hair flowed in the wind when she was flying, how she beamed when she caught the Snitch.
The merpeople were right; Cho was very dear to him. He'd had other girlfriends, but he hadn't ever loved any of them. Cho he loved. She was what made the Yule Ball so enjoyable. Dancing with her was pure bliss.
In the first task, thinking of her helped him retrieve the golden egg from the Swedish Short-Snout. He saw her in the crowd, after he had fetched the golden egg, and he was delighted to see her clapping, beaming at him.
He felt like dancing right then and there when Cho accepted his offer to go to the Yule Ball with him. She seemed to enjoy being with him as much as he enjoyed being with her, and didn't seem to like him just for his looks.
After the second task, he knew that he loved Cho Chang. It wasn't just lust, it was love. He told her so, and he was delighted to know that she shared the same feelings.
And now he was preparing for the third task. He imagined himself celebrating at the end with Cho, and he grinned. He couldn't wait until it was over. Perhaps over the summer, he would invite Cho to the next Quidditch World Cup, if it was taking place near Britain.
Sighing, he looked over his spellbooks, deciding which spells would be worth learning at the last moment.
Author's Note: I was looking through the files on my computer and found this. I wrote it a long time ago, but here it is.