Well, in general, it's not ethical. We live in a society that values propriety and respect for others. These kinds of stories involve private and often inappropriate sexual relationships, which go against the values of decency that most people uphold. It can also make others uncomfortable if discussed openly.
No. Such a story with sexual content is not appropriate in the context of general literature. It goes against moral and ethical standards in most public and family - friendly environments.
No, it's not appropriate. Sexual experiences, especially those of a non - traditional nature like a threesome, should be kept private. We live in a society that values privacy and respect, and sharing such stories violates those values.
No. Threesome sex stories involve sexual content which is inappropriate for public discussion. Such topics are private and often violate moral and ethical norms in a public setting.
No. Threesome sex stories are not appropriate for mainstream media as they involve sexual content which goes against the moral and ethical standards that mainstream media usually adheres to. It may also be considered offensive to a large number of the audience.
Mostly, they are fictional. Writers create these stories to appeal to certain fantasies. They might draw inspiration from general relationship dynamics and add a spicy threesome element to it. It's rare that we can be sure they are based on reality as people are not very open about such personal and often frowned - upon experiences in real life.