House Rules
She stands and turns to face you, and you are once again confronted with the full situation. Tattoos, bare skin, that expression that gives absolutely nothing away.
Since you don't move she starts speaking "Shoulders first, then back, then arms. Use the mitt, not the sponge. The soap is the grey one, don't use the other one, it's for my face.
She delivers all of this like a set of instructions for operating a piece of equipment. Which, you suppose, is more or less what you are right now.
You take the mitt. You take the grey soap. You start at her shoulders and work down, and you are extremely, acutely, almost painfully aware of every inch of her.
The mitt, you quickly realize, is not a sponge. There is no pretending you're not touching her whole body. It's your hand, separated from her skin by just a thin layer.
For you it is quite erotic and deeply frustrating. You are hard within the first thirty seconds and you stay that way for the entire duration, saying nothing, doing your job, while Charlotte stares at the middle distance and occasionally says "a little lower" or "the left shoulder again" in the same tone she uses to request the correct tea temperature.