My wife has this friend, she is a cute, petite blonde, with huge natural tits, and from the very start, she told me that she is a nympho. That was interesting to me, so I wanted more info. It turned out, she was a serial cheater, there were even some stories about her being with multiple guys at once and similar stuff. Important piece of information - she never told anything to my wife, but she has been seen with men she wasn't dating at the time, and many other things, which collaborated these stories.
Then, some ten years ago, she hooked up with one of my friends, and it got serious. When I saw that, I thought what to do, to tell him, to warn him, or not, and, I guess that is what friends are for, so I did. He got so mad, that he took a swing at me. So, me and him, we lost all contact, and same happened to her and my wife.
When I got divorced a year ago, she was in my DMs after a few days, and she was very upfront with what she wanted. Having someone to fuck, just after getting divorced, is not a bad thing, and we did it five times over a span of two weeks, so there might be something in all of that nympho talk. I ended it, because, I felt bad, not because of him, nor my ex wife, I felt bad about myself, for being with such a low life, who made me act like one.