I'm looking for a story I read a couple of years ago (might have been during the 2020 lockdown). The story was told from the POV of an incubus and succubus who are siblings or twins. They go around and "nudge" other couples into incestuous relationships.
As I recall, there were three couples that they influenced and then watched, all of which had pretty hot sex scenes - one with a mother & son, one with a dad & daughter, and one with brother & sister.
As I recall, there were three couples that they influenced and then watched, all of which had pretty hot sex scenes - one with a mother & son, one with a dad & daughter, and one with brother & sister.