It is not ethical at all. In a normal family and social context, sexual relationships should be within the boundaries of marriage and appropriate moral standards. Having relations with a wife's sister while the wife is present in any way is a very abnormal and unethical situation. It violates the basic principles of monogamy, family loyalty, and respect for family members. It can also cause a great deal of psychological harm to the wife and disrupt the stability of the entire family.
Definitely not. In most societies, this goes against the values of monogamy and family integrity. It can cause great harm to the wife, the sister - in - law, and the entire family structure. It's a serious breach of trust and moral boundaries.
One appropriate story could be about how the wife's older sister helps the couple during their wedding preparations. She might use her experience to offer advice on choosing the right venue, the best flowers, and how to deal with family politics during the big day.
No. Such content is often inappropriate and may involve unethical or vulgar themes. We should focus on positive, healthy and respectful literature and stories.
In most cases, they are not appropriate. Mainstream literature typically aims to promote positive values, and these kinds of stories with their often explicit and unethical overtones go against that. For example, they can objectify and disrespect relationships, which is not what we want to encourage in a general reading public.
Sharing such stories is highly inappropriate as it involves someone's private and sexual experiences without their consent, which violates privacy and ethical boundaries.