I don't know if it is relevant, but I had a sub who loved me and would do anything I said...to a fault? But I found just from experience...by accident? that she would stop rebelling if I gave her my cum. I mean if I came in her mouth or on her body or inside her, it seemed to slow down her constant jumping up and down and asking for more! mORE! MORE!
So what I would do is cum on her and make her rub it in for "punishment" or inside her for "reward." (she loved this, so it wasn't hard to figure out.)
If this is painfully out of left field I apologize.