Demi Moore and Ashton Kutcher have been divorced for a short time now, but were separated for a lengthy period of time prior to it becoming final. During an episode of What What Happens Live on Thursday, Andy Cohen chatted with guests Scott Eastwood and Jon Cryer about Moore after a guest called in to ask the Two and a Half Men star what it was like having dated his costar’s ex-wife.

Yes, Jon Cryer dated Demi Moore back in the 1980s. In fact, he detailed the brief romance in his new book, So That Happened. Cryer had no problem answering the caller’s question, and was ready to move on to the next topic when Scott Eastwood dropped the ball. And it was a big ball–a very big ball.

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

Woah, did @ScottEastwood just drop a bombshell about Ashton Kutcher & Demi Moore's divorce? http://t.co/s2Lh9bnsvf pic.twitter.com/KzpuFItMCL

— EntertainmentTonight (@etnow) April 10, 2015

“Great!” Cryer said–thinking Scott Eastwood was joking.

He wasn’t.

“But she was my current girlfriend at the time, so yeah,” the Longest Ride star shared.

“Oh! Ouch!” Cryer said, by now realizing that Eastwood was completely serious.

That’s when Andy Cohen had to jump in.

“Wait!” Cohen said. “He slept with her while you were together?”

“Yeah,” he said. “It was, I think, the catalyst that broke—”

“That broke you up?” Cohen interrupted.

“No, that broke up him and Demi up,” Scott Eastwood clarified.

Andy Cohen looked shocked, as did Jon Cryer.

“Oh, jeez! This is way…OK, I need a drink!” Cryer exclaimed.

Demi Moore and Ashton Kutcher apparently were already on the rocks when this cheating incident occurred, but it–according to Scott Eastwood–was the beginning of the official end.

It should be noted that Scott Eastwood never mentioned the name of his former girlfriend during his disclosure on Watch What Happens Live. Could it have been Sara Leal–the young woman who made news for her affair with the That 70s Show star?