Yes, there are quite a few. You can start by looking on popular fanfiction websites like Archive of Our Own. Some fanfics in this theme might explore the complex emotions Harry could have for Sirius in a really interesting way, delving into their relationship and how such a crush might develop within the context of the Harry Potter universe.
Often, there's the theme of emotional turmoil. Harry having a crush on Sirius can bring a lot of confusion for him. He might struggle with how to act around Sirius, how to deal with his own jealousy if Sirius pays attention to others. Also, loyalty is a theme. Harry's loyalty to Sirius might be intensified by his crush, and he has to balance that with his other relationships in the story.
In the fanfiction, Sirius having a crush on Hermione could also be due to her bravery. Hermione is not one to shy away from danger when it comes to protecting her friends or fighting for what's right. Sirius, who has also shown great courage throughout his life, might be attracted to this quality in her. Their relationship could develop in a more action - packed way. For example, during a battle against Death Eaters, Sirius might realize his feelings for Hermione as he sees her fearlessly casting spells. He could then start to leave little protective charms around for her, which she eventually discovers and starts to suspect his feelings.
A plot twist could be that Hermione is initially oblivious to Sirius' feelings. She's so focused on her studies and the fight against Voldemort that she doesn't notice the signs. But then, one day, she accidentally stumbles upon a letter Sirius was writing about his feelings for her. This throws her into a state of confusion as she never expected such a thing from him.
Yes, there are some out there. You can try searching on fanfiction websites like Archive of Our Own. Some might explore this rather unique and unorthodox pairing in creative ways, perhaps delving into the complex emotions that could arise from such a situation within the magical world setting.
Yes, it is quite a common theme. Many fanfiction writers explore this idea as it adds an interesting dynamic to the relationship between Harry and Draco. It allows for the exploration of their characters in a different light, delving into themes like unexpected attraction and the breaking down of enmity.
There is. In many of these fanfictions, the authors take creative liberties. They might have Snape secretly protecting Harry not just because of his mother Lily, but also because of his own feelings. They also might show how Harry could potentially respond if he were to find out, which could range from shock to confusion to something more positive.
There are definitely some. Look for tags related to 'Harry has a crush on Snape' on fanfiction platforms. However, it's a rather unconventional pairing, so the number of fics might not be as large as more common pairings. But the ones that exist can offer a fresh take on the Harry Potter universe and the characters' relationships.
Gabrielle could try to be around Harry as much as possible. She might join the activities he likes, for example, if Harry is into a certain sport, Gabrielle could start going to the games or even try to learn the sport herself just to get closer to him. And when they do interact, she would be extra nice and attentive.