Yes, there are quite a few. You can check out some popular fanfiction websites like Fanfiction.net or Archive of Our Own. Just search for 'Cedric has a crush on Hermione' and you'll find a variety of stories with different takes on this idea.
There's a really good one called 'Cedric's Secret Love'. In this fanfic, Cedric's crush on Harry starts as a simple admiration that gradually grows into something deeper. It shows how their interactions, like during the Triwizard Tournament, could have been the starting point of Cedric's unspoken feelings. It also explores how Cedric might have dealt with jealousy when Harry was in the spotlight.
One common theme is the 'forbidden love' aspect. Since Hermione is often associated with Harry and Ron, Cedric's crush can be seen as something that goes against the natural group dynamics. Another theme could be self - discovery for Cedric, as he realizes his feelings for Hermione.
Many of these fanfictions have the theme of unrequited love. Cedric might be pining for Harry, but Harry may be oblivious or not feel the same way at first. This creates a lot of angst and drama in the stories. Also, there's the theme of secrecy. Cedric would need to keep his crush a secret, which adds an element of mystery and tension to the fanfiction.
Some comic storylines suggest that Bucky might have had a crush on Steve. It's not always explicitly stated but can be inferred from their interactions and the depth of their bond.
One popular 'Harry has a crush on Ginny' fanfiction is 'The Ginny Chronicles'. It beautifully explores their relationship from the early days of Harry's unspoken feelings. Another is 'Harry and Ginny: Unspoken Love' which delves into the little moments between them that show his growing crush.
I recommend " Kiss from Heaven " and " Reborn Bamboo Horse Is Hard to Deal with " to you.
" Kiss from the Sky " was a romantic youth novel. The female protagonist Ouyang Yinglai was not very interested in the male protagonist Kai Xian at first, but she gradually developed feelings for him. However, the male protagonist Kai Xian had someone he loved. This was a novel where the female protagonist had a crush on the male protagonist, but the male protagonist had someone he liked.
" Reborn Bamboo Horse Is Hard to Deal with " was also such a novel. The female protagonist Chun Ruoruo reincarnated into the novel world to pursue her husband, but the male god who was originally unable to reach her in reality in the novel directly ignored her coldly at the beginning. This book was also very good.
I hope you like my recommendation.
Yes, Duan Chengfeng had a crush on Sang Zhi. Duan Chengfeng had started to like Sang Zhi when she was still very young. He had always had a special feeling for Sang Zhi. At first, he might have only taken care of her as a sister, but at some special moments, Duan Chengfeng gradually found that he had deeper feelings for Sang Zhi. To be specific, it might be the moment when Sang Zhi wiped the water off his face and encouraged him, or when he started to care about Sang Zhi's every move during the reunion at the KTV. In short, Duan Chengfeng had a crush on Sang Zhi and finally proposed to her.
Fans like these fanfictions because it's a natural progression of the relationship in the original series. It gives more depth to their love story that wasn't fully explored in the books.