In mainstream literature, intense sex stories are generally not considered appropriate. Mainstream literature aims to reach a wide audience, including children and those with conservative values. Such stories often involve explicit sexual content which goes against the moral and ethical norms of a general readership.
One can focus on the emotional aspects. For example, describe the longing, the jealousy, and the deep connection between the characters. You can show how they support each other during tough times or how they grow together.
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One ethical consideration is consent. Since fanfic often involves using existing characters or universes, it's important to ensure that the content doesn't violate the implied or stated boundaries of those original works. Also, it should be made clear that it's a work of fiction and not a representation of real - life relationships. Another aspect is the audience. If it contains adult - like themes, it should be properly labeled and not made accessible to minors.
To write engaging and respectful 'intense sex fanfic', focus on character development. Make the characters' emotions and desires seem real and relatable. Also, use tasteful language. Avoid vulgar words and be descriptive in a more artistic way. For example, instead of using crude terms, describe the passion through the characters' body language and expressions.
The story of Dunkirk evacuation can be considered intense. The Allied forces were surrounded by the German army on the beaches of Dunkirk. Against all odds, a large number of soldiers were evacuated by a flotilla of small boats, along with naval vessels. It was a race against time and a display of great courage and desperation in the face of a dire military situation.
There are many. For instance, 'The Cask of Amontillado' by Poe. In this story, a man named Montresor lures his so - called friend Fortunato into the catacombs under the pretense of tasting a rare wine. He then walls Fortunato up alive, which is extremely intense. 'Young Goodman Brown' by Nathaniel Hawthorne is also intense. Goodman Brown goes on a journey into the forest at night and experiences a dark encounter that makes him question his faith and the goodness of those around him.
In a gay cruising story, a young man went to a beach that was a popular cruising spot. He saw an older, more experienced man. They started a conversation near the shore. The older man shared his life experiences, and the young man was intrigued. They went for a long walk along the beach, and the connection between them became more and more intense as they shared their hopes and dreams.