So I did actually 'date' a legitimate nymphomaniac once.
I could keep up, but the deal was no catching feelings, just casual fwb... and I eventually caught feelings, so it was basically just a very wild summer and autumn.
But uh yeah, I told a few friends about her uh, appetite, in fairly broad terms... half of them didn't believe me, that either she was that 'demanding', or that I had that much 'spare time', or both.