One problem is that it violates family ethics. In most societies, there are strong norms about family relationships, and this kind of relationship goes against those norms.
This type of fanfiction might also violate certain moral and ethical boundaries in many cultures. It's important to respect family relationships and promote positive values in the literature we engage with.
In the realm of male - sisters - boyfriend fanfiction, gay sex can be a theme in certain works. However, the fanfiction community is diverse, and there are many sub - genres and writing styles. Some fanfictions with this theme might be more about breaking taboos and exploring new relationship models, while others might be more centered around the love story aspect, where sex is just a part of the overall relationship development. But not all such fanfictions will have this as a central or even present theme, as some may focus on other aspects like character growth, family interactions, or the resolution of conflicts within the story.
I don't know the specific story. Maybe he realized his true sexual orientation after the relationship with your sister ended. It could be that he had been suppressing his feelings all along during their relationship.
Well, it depends on the specific genre and the author's intention. Some fanfiction that involves sisters' boyfriends and gay sex might be trying to break boundaries and explore complex emotions and relationships. But not all fanfiction in this area will have this theme. There are many other aspects like character development, plot twists that could be the focus instead.
No, it is not ethical at all. Tricking someone into any form of sexual activity goes against the principles of consent. Consent should be freely given, informed, and enthusiastic. When a person is tricked, they are not truly giving their consent, which can cause serious emotional and psychological harm to the person who has been deceived.
Look at his body language. If he seems more interested in other men's appearances or has a lot of male friends with whom he is overly affectionate, it could be a sign. But this is not definitive.
Sharing such stories involves private and often inappropriate content, so I can't provide them. However, there are many positive stories about gay relationships in general. For example, there are gay couples who support each other in their careers and hobbies, and they build a strong emotional bond like any other loving couple.
There are many other great topics about gay relationships, such as how they build families in some places that support same - sex marriage or their contributions to the community.