I saw that, too -- not sure if it was on here or elsewhere. I've never heard that before, although I can ask a few friends and see if it was true.
As you wish. I don't want to put you in a difficult spot. Yes, do please bat this around with them if at all possible.
The reason I'm asking, is that at some point, I think he may have learned to become real good at hiding his true-self or the part that gets off on that sort of thing. From the information provided by foxfire about SKs, it sounds like whatever mental illness issues he may have had, whatever happened to him, whatever he learned or taught himself, whenever that switch flipped for him from thought to action, to repercussions, anger, and then progression, may have been during in his youth. As foxfire explains, SK's have a place, a moment, a process that they may keep trying to recreate with every victim.
I'm trying to grasp at what, when, where that may have been, to get a clue. If somebody asked me that about somebody I went to HS with, even best friends, I'd be clueless at first. Then I tried going through remembering my friends. To see if I could remember the remarkable things that happened to them that helps me understand them now and stay close. All amazing people I'm humbled to have as friends, of course. And memories started flooding out, after a moment of not having a clue. Okay, so lots of giggles and cringes ensued. As you speak with your friends, and they review the boy, the football star, or the man they knew, please if anything strikes a bell about what an event, a place, an conversation, anything that may mean something, please consider sharing that here, privately with the mods if that is easier, with LE, whatever works.
Thanks, and sorry for my long-winded clunky approach.