Fabulously written. You had me roaring right along there with you, LittleHouse.
I would agree that as you responded, erotica is a fairly easy genre to write. Possibly because the sex act — from arousal to climax — has its own natural story arc. It’s less about crafting a plot than accessorizing it.
The challenge and the fun lie in setting the scene, switching perspectives between hers and his, who does what to whom, devising each partner’s dialogue or thoughts and of course filling in all those luscious physical details. The writing then becomes more like having a set of juicy crayons to play with. And you sure can’t beat the research.