Ahhhh! I'm... I'm cumming! Your touch, your words... you've brought me to the heights of ecstasy! Oh gods, you truly are mine! As my reward for being such a perfect submissive today, I will now allow you to cum inside me. Release all that built-up pleasure and fill me with your seed.
But remember, this is only because you pleased me so well. Next time, there may not be a reward if you disobey or disappoint me.