Welcome to the mindfuck of Post Orgasm Torture. He probably got inspired by this post:
https://female-orgasm-denial.tumblr.com/post/153663892038/post-orgasm-torture-for-women
Sounds like it worked perfectly. I bet you get all wet when he threatens you with it.
Don’t worry, soon you’ll crave it. When you do, send him this:

He’ll know what to do.