I'm not sure if there is a specific fanfic with exactly that title, but it's a very common trope in fanfiction. Jealousy can add a lot of drama and tension to a story. Maybe check on popular fanfic websites and search for these characters along with the keyword 'jealous'.
One great Solangelo fanfiction where Will is jealous can be found on Archive of Our Own. It's titled 'Green - eyed Jealousy'. It really delves into Will's insecurities and how he copes with his jealousy in the relationship, all while maintaining the essence of the Solangelo dynamic.
In the fanfiction, Fem Kyuubi could be jealous of Naruto's relationships. Naruto has strong bonds with his friends like Sasuke and Sakura. Kyuubi, being trapped inside Naruto for so long, might envy those connections. She could try to interfere in Naruto's friendships by whispering negative thoughts in his mind during their interactions, hoping to drive a wedge between them.
Jealousy among siblings can be complex. However, this kind of jealousy regarding body parts is inappropriate. Instead of focusing on such physical differences, sisters should focus on building a positive relationship based on mutual respect, shared interests, and emotional support.
One possible scenario in this fanfiction could be that Sakura realizes her long - hidden feelings for Naruto when she sees Hinata getting closer to him. She might start to act out in small ways, like being a bit more snippy with Hinata during team meetings or training sessions. However, she also has to deal with her own sense of pride and the fact that she once rejected Naruto.
Yes, there might be such fanfics in the Twilight fanfic community. Writers often explore different relationship dynamics within the Twilight universe. They may create scenarios where Bella is paired with Jasper instead of Edward, which would naturally make Alice jealous considering her close relationship with Jasper in the original story.
One possible fanfiction could be where Hermione gets jealous when Ron starts spending a lot of time with a new female student in Hogwarts. She starts acting out in class and Ron doesn't understand why at first. Then, Harry has to step in and make Ron realize that Hermione might be feeling left out. This could lead to a big argument between Ron and Hermione which Harry tries to mediate.
In a fanfiction, Flame Princess might be jealous if she hears rumors about Jake and Finn having a new female adventuring partner. She's a proud character, and the thought of someone else taking her place in their adventures could make her jealous. So she might set out to prove she's still the best partner for them by showing off her powerful fire abilities.
Well, one possible scenario in such a fanfic could be that Harry Potter is jealous of Percy Jackson's connection to the sea. Since Harry has his own element of water in the form of the Black Lake at Hogwarts, but Percy has this vast and powerful connection to all of the oceans. It could create a really interesting dynamic where Harry feels overshadowed in a way.
One possible fanfiction could be about Sabine getting jealous when Ezra starts spending more time with a new female character. Maybe she starts acting out in training sessions, being more aggressive than usual. This jealousy could stem from her unspoken feelings for Ezra that she hasn't fully realized yet.