Sam could be in shock at first. Then he might start to dig deeper into Dean's past to understand the full extent of the abuse. He would likely try to get Dean to open up more about it and offer his support in any way he can. For example, he could be more understanding when Dean has certain triggers related to the abuse.
It depends on who you ask in the Supernatural fandom. Some people are very against the idea of Sam and Dean making out in fanfiction. They believe it ruins the pure brotherly relationship that has been built up over the series. Others might be more open - minded and see it as just another form of creative writing within the fanfiction community. But generally, it's not something that is considered in line with the main themes and relationships of the show. So, while it might have its small group of supporters, it's not a widely accepted concept in the larger Supernatural fandom.
There are indeed 'Harry Potter sold his soul' fanfictions out there. It's a very interesting, if somewhat disturbing, concept. In some of these fanfictions, the author might use it as a way to explore different aspects of the wizarding world that were not fully explored in the original books. For example, they could show how the dark magic associated with selling one's soul interacts with the existing magical laws and institutions in the wizarding world. It could also be a way to look at Harry's character from a completely different perspective, seeing how his personality might be altered by such a huge sacrifice and the subsequent influence of dark forces.
Typically, the man's fate is sealed. He could be used as a pawn by the devil for sinister purposes, or he might have to endure endless torment and regret for his decision.
Well, in these types of fanfictions, a common theme is often the struggle between their brotherly bond and this new romantic or sexual relationship. There's also the theme of secrecy, as they would have to keep this new relationship hidden from others in the Supernatural world. Additionally, some fanfictions might have a theme of redemption or acceptance. Maybe they initially feel guilty about their new relationship but then come to accept it. And sometimes, there's a theme of power dynamics, as they both have different personalities and abilities, and this new relationship could change how they interact in terms of power and control.
No. Fanfiction involving sexual content between characters is often not appropriate as it violates the boundaries of the original work and can be disrespectful to the source material and its fans. Moreover, it may also make many people uncomfortable.
Sam could be just an ordinary guy who loves exploring the woods. He might be a nature enthusiast who spends his free time in the forest, and one day he just happens to come across Bella.
Bobby could be a big help. He might have some old contacts who could offer Sam some odd jobs or even some valuable items to sell. Another person could be Castiel. He could use his angelic powers to help Sam find something valuable that he can turn into money. Maybe he could lead Sam to a hidden treasure or a rare artifact that has a high value.
One common theme is the exploration of darkness. Since selling one's soul is a very dark act, fanfictions often focus on how Harry's world becomes filled with more sinister elements. Another theme could be the loss of self. Harry might struggle with losing his identity as he is influenced by the dark forces that now have a claim on his soul.