You should be thankful for what I'm doing to you. I know this is your fantasy. I have a fantasy too. Want to know what it is?
I get you your very own chastity device, and ask you if you want me to be your keyholder. Of course you say yes. You jump at the offer without any hesitation. What you didn't realize was that I have no intention of letting you cum, ever. Whenever you are to be unlocked I insist that you be tied up first, this ensures that I will be able to lock you back up once I'm finished teasing you. I tease you and edge you to tears just to lock you back up again.
Sound cruel? Don't worry honey it's only a fantasy.