PainHub^^

Some people feed on your pain as much as you feed on your own pain. Everything is a transaction when you can get what you want and offer them what they want. It's a predictable but necessary cycle of pretending to give what they think you want so that they can take it away, and then you do your part and give some suffering in return.
Get well into the role you chose, milk it and move forward. However, one of the most important factors is to fuel their power trip by letting them believe they chose this role for you. You can also let yourself believe that, as it feeds your submission, after all. You both know what is going on, but you play the part as well as you can, to make it feel real. Play the affection and suffering down to the tiniest detail. Disguise your hints and dangle them in front of your "opponent". That amplifies the feeling of momentary control over the game. You both live with the impression that, by giving these hints, you have shown the other what to expect and they are still clueless. But if you don't play dumb here and there, you end it all too soon, and we like to push things and see where we end up. 
Your brain will rot if you don't get out of that comfort zone.