In some fanfictions, Scott might betray Stiles by choosing the wrong side in a conflict. For example, if there's a power struggle between different supernatural groups, Scott could side with a group that has intentions harmful to Stiles or his family.
Another situation could be related to power. If Scott gains new powers and becomes power - hungry, he might see Stiles as a threat or an obstacle. He could then betray Stiles by spreading false rumors about him in the supernatural community, or by using his powers to manipulate situations to Stiles' detriment. This could be especially likely if there are forces in the story that are influencing Scott to change his loyalty.
Perhaps in the fanfiction, Scott falls in love with someone that Stiles also has feelings for. This love triangle situation could turn Stiles' feelings into hatred as he sees Scott as a rival for the person he cares about. Also, if Scott accidentally reveals one of Stiles' secrets that he promised to keep, Stiles would likely be very angry and could start to hate Scott.
It becomes strained. Trust is broken, and Stiles may start to distance himself from Scott. He might not believe in Scott's words or actions anymore, and there will be a lot of tension between them.
One possible scenario could be that Derek wants to gain Scott's trust. Since Stiles is Scott's best friend, Derek might think that by getting closer to Stiles, he can have an in - road to Scott. For example, he could ask Stiles to pass on messages to Scott or arrange meetings through Stiles.
Well, it could be that Rias betrays Naruto for power. Maybe she makes a deal with a powerful enemy of Naruto in order to gain more influence in the ninja world or some other realm. Another possibility is that she betrays him out of jealousy if Naruto has something she desires deeply, like a special technique or a strong bond with someone she wants to break.
In the fanfiction, it might cause Stiles to question his trust in Scott. Their relationship could become strained as Stiles distances himself from Scott. Scott, on the other hand, would be desperate to regain Stiles' trust. He might go to great lengths, such as seeking advice from other friends or taking on extra risks to prove his loyalty to Stiles.
One possible reason could be that Peter has a certain allure of mystery. Stiles is a curious character, and Peter's complex past and often ambiguous motives might draw Stiles in. Peter also has a more unorthodox way of dealing with things, which could seem exciting compared to Scott's more straightforward approach.
Another scenario could be out of jealousy. Suppose there's a vampire who has always been envious of Moka's popularity or her special abilities. This jealousy could fester and lead to betrayal. They might spread false rumors about Moka among the vampire community or even try to frame her for something she didn't do.
One possible scenario could be that Derek arrives just in time as Gerard is about to harm Stiles. Derek uses his werewolf strength and speed to fight Gerard off, perhaps with some cool combat moves. He then quickly gets Stiles to safety, like taking him back to the pack house.
One popular Stiles and Scott fanfiction is 'The Bond Beyond Friendship'. It delves deep into their relationship, showing how they support each other through various challenges in the supernatural world. Another great one is 'Stiles and Scott: The Untold Adventures' which creates new and exciting storylines for them.
One popular theme is friendship exploration. Writers often delve into how their relationship might be different or enhanced if Stiles was female. Another theme is the romantic aspect, with some fanfictions exploring a possible romantic relationship between them.