In some fictional fantasy worlds, like in certain vampire - human love stories. Vampires are often seen as the 'other', something to be feared and hunted. A human falling in love with a vampire would be a forbidden love. The vampire's nature of needing blood and being associated with death makes the relationship seem unforgivable to the human society in those stories. The couple has to fight against the prejudices and the physical and cultural differences between them.
The 'forbidden love the unforgivable couple' could refer to many fictional or real - life scenarios. In some stories, it might be a couple from feuding families like Romeo and Juliet. Their families' enmity makes their love forbidden. Society's norms, such as differences in social class or race, can also create such situations. For example, in some historical periods, an aristocrat falling in love with a commoner was seen as unacceptable. However, without more specific context, it's hard to tell the exact full story.
One example is the Watergate scandal. Initially, there were attempts to keep the story of the break - in at the Democratic National Committee headquarters and the subsequent cover - up a secret. It was a 'forbidden story' until the journalists like Woodward and Bernstein dug deeper.
One example could be 'Lolita' by Vladimir Nabokov. It was considered controversial due to its theme of an older man's infatuation with a young girl.
One example could be 'The Scarlet Letter' by Nathaniel Hawthorne. Hester Prynne, the female lead, is in a situation that was considered highly scandalous in her Puritan society. She has a child out of wedlock, which was a great taboo at that time.
One example could be a case of child abuse that actually occurred. The harm done to the innocent child is unforgivable as it violates the most basic protection that should be given to the vulnerable. This is based on real - life situations that unfortunately do happen.
It's hard to give exact examples without more context about what 'forbidden necessities' specifically mean in this term. But say in a vampire - themed fandom, a 'forbidden necessities fan fiction' could be one where a vampire has to expose themselves to sunlight (which is usually a big no - no for vampires) in order to save their human love interest from a greater evil. The exposure to sunlight is the 'forbidden' part and saving the love interest is the 'necessity'.
One example could be a fanfic about a hero and a villain getting romantically involved in a story where they are supposed to be enemies. Another could be a fanfic exploring a relationship between characters with a large age gap in a work that doesn't usually touch on such relationships.
Well, there are cases where a family business heir falls in love with an artist, which the family sees as beneath their status. The family forbids the relationship because they have a certain image to uphold and they want the heir to marry within their social and business circle. This is a common 'love or family' forbidden true story.
One example is the story of Romeo and Juliet. They were from feuding families, the Montagues and the Capulets. Their love was forbidden because of the long - standing enmity between their families. Despite this, they fell deeply in love and were willing to go against their families' wishes. In the end, their story ended in tragedy with both of them dying, but their love has become a symbol of true, forbidden love that has been told for centuries.
Perhaps there are tales of love that go against cultural norms. For example, in some cultures, a relationship between individuals of different religions is frowned upon. In this book, it may tell the stories of those who are in such relationships and are unashamed of their love, despite the cultural taboos.