It Was Always Your Choice
You're still responsible for all the chores, of course, and just as before, whenever I want to be pleasured you will be sure to pleasure me. I've never let you fuck me, but now I'll allow you to do it whenever I want. We'll simply strap a strap-on to you and I will ride it as I choose. This, I can tell you, is an experience, to have a woman pumping atop you in throes of ecstasy while you feel nothing but the shove of her hips. You'll crave it as you crave all sexual experiences, even if you do not come.
When the pressure becomes too much for you, there will be times when I'll be happy to return the favor, of course. I know you're not much into anal play but milking your prostate will help keep you healthy and relieve some of the pressure from time to time. That too, you will soon come to crave, to need, but to only be given by your mistress.