Trying to Find a Story

[YourObedientServant]

So I am looking for a story on getDare. I don't know what section it's in (but I have a gut feeling that it's in 18+) and I don't even know the name o it. But I do know what it's about. A guy (I can't remember his name) is away from his fuck buddy and he eventually visits her. Then, he suggests that they have a challenge, see who can make the other utter their safeword. He goes first, and gets rough, but Katie-the girl-doesn't say the safeword. But he makes 3 mistakes and Katie does the same thing but 10x worse.

I'm sorry that I'm not good at remembering

And I'm also sorry if this is in the wrong place