“Slave” implies an inequality from the get go.
Here’s how my FLR works:
“So we have edged back toward a rather elegant, understated, world in which I am the servant/lover of the very elegant lady of the house. Hannah is beautiful, nicely demanding and able to give an order without anyone, except me, knowing she has. Part of my duties is to be her maid, taking care of her clothes, making her bed; part is being her servant in the sense of serving her wine or a bit of cheese, doing laundry, wielding the vacuum; part is being her ardent, but always obedient, lover. We work these roles out as we go along.
The one certainty being that I accept and welcome Hannah’s discipline and acknowledge that I have no right to discipline or even talk back to her.” two alphas
Not for everyone, works for us.