On Thursday’s episode of “Watch What Happens Live,” Scott Eastwood shared a previously unknown bit of weapons-grade gossip about the Ashton Kutcher / Demi Moore divorce – his ex-girlfriend was part of the naked hot-tub party in San Diego that broke the back of their marriage.

The LA Times reports that Jon Cryer, who was also on the show that evening, was quizzed by a fan about whether he had any awkwardness with Kutcher on the set of “Two and a Half Men,” given that they had both courted Moore. Cryer admitted that there was some initial tenseness, but they were able to move past it quickly.

“If it makes you feel any better, he did sleep with one of my ex-girlfriends,” Eastwood chimed in.

“Great!” Cryer said.

“But,” Eastwood added, “she was my current girlfriend at the time.”

The startled host, Andy Cohen, asked Eastwood how he found out.

“Well,” he replied, “it was, I think, the catalyst that broke him and Demi up.”

Everyone started to compare mental notes, and settled on an infamous date in October 2o11.

“Was it the girl in San Diego?” Cohen asked.

“Yeah, it was her and her friends,” Eastwood said. “Remember those? My buddy and I dated those two girls.”

Eastwood more or less took the high road, refusing to name the girl in question. Based on an interview published by Us Weekly, it could either have been Sara Leal, who admitted to the mag that the Kutcher fling was her first-ever one-night stand, or the unidentified second woman who participated in the hot-tub shenanigans.

Anyone who’d like to soothe Cryer’s or Eastwood’s bruised egos is welcome to either purchase Cryer’s new memoir, So That Happened, or head to theaters this weekend to check out Eastwood’s performance in the Nicholas Sparks film adaptation The Longest Ride.