Nope, I have not. But would not surprise me at all.
And it shouldn't.
The phrase "Absolute power corrupts, absolutely" comes to mind.
You see, when you have the power to fulfill your whims, soon you become bored with 'normal' things. Women throng to powerful men, so it is easy for them. Then... they desire what is forbidden, because only that gives them 'pleasure'.
That is why those who become very 'wealthy' and 'famous' usually end up dead. Money and fame lose their lustre. Onwards and downwards to drugs and 'prohibited' acts of lust, they go.
Politicians have more ability to keep their 'acts' suppressed than Hollywood Celebrities, so mostly we only hear about it happening to the Celebs.