Sierra Simone was a librarian. She'd studied theology in graduate school, spent years reading Augustine and Aquinas, and worked at a public library where she shelved romance novels and recommended picture books. Then she wrote a book about a Catholic priest who falls in love with a woman, and it was one of the most explicitly sexual novels published that year.
Priest isn't a book that happens to be about a clergyman. The entire structure depends on Father Bell's faith being real. His vows matter to him. His belief in sin is genuine. So when desire arrives, it doesn't just create tension between two people. It creates a theological crisis that plays out in the bedroom and the confessional in equal measure, and Simone writes both with the same unflinching attention because she understands that in this story, they're the same thing.
The book became a bestseller through word of mouth and later through BookTok. But what's worth noticing is why readers kept recommending it. They didn't talk about it like guilty pleasure reading. They talked about it like it had wrecked them. The seriousness of the faith made the desire serious. The seriousness of the desire made the faith serious. Neither undercut the other.
That's the thing most erotica writing tips get wrong. They focus on how to write sex scenes. The better question is how to make sex scenes carry the weight of everything else that's happening in your characters' lives.
Worldbuilding makes the reader pay attention
Ruby Dixon's Ice Planet Barbarians series has sold millions of copies. The premise sounds like a joke if you haven't read it: human women get stranded on an ice planet and pair off with large blue aliens. Twenty-two books and counting.
What Dixon figured out is that unfamiliarity forces engagement. Her alien species has its own biology. There's a thing called "resonance" where a parasite in the alien's chest starts purring when it recognizes a mate. The aliens have different anatomy. Different cultural assumptions about partnership. Different ideas about what intimacy means.
So when a scene gets physical, the reader can't skim. You can't fall back on the usual choreography because the choreography is different here. Every detail requires attention because the rules of the world demand it. Dixon plays all of this completely straight, with humor but without irony, and the effect is that her erotica reads more carefully than most literary fiction because the reader genuinely doesn't know what happens next.
There's a craft lesson in that for anyone writing erotica, even without aliens. The more specific and strange you make the physical world of your story, the harder it is for readers to glaze over. Specificity is the opposite of generic. And generic is what makes erotica feel disposable.