Tori Spelling said Saturday during her one-hour Lifetime special, Tori Spelling: Celebrity Lie Detector that she had sex with her Beverly Hills, 90210 costar Jason Priestly.

Spelling, in a teaser for the special, confessed to sleeping with two of her former costars. But it wasn’t until the special aired that viewers became aware of the identity of one of them, as reported by Us Weekly.

“Was there anyone else from the original cast, I’m just going to say it, that you had sex with?” host Louise Roe asked the former actress.

Tori Spelling voluntarily took a crazy lie detector test: https://t.co/LICAg2WDQv pic.twitter.com/6vQluheZrr

— JustJared.com (@JustJared) October 1, 2015

“Yes, but I’m not going to tell you who it is,” replied an anxious Spelling, who was hooked up to the lie detecting device. “I’m not telling you. I’m trying to do my lie detector poker face.”

After thinking about it for a moment, Roe exclaimed, “It was Jason Priestley.”

“Yeah,” Spelling replied. “It was a summer fling. It was off-set. It was our version of a summer romance. The 90210 version. And that was it, and we stayed great friends for the rest of the run and beyond that, we had that one summer fling.”

Priestley, for his part, didn’t deny the revelation when he took to his Twitter to address the claim following the interview.

“I’m not getting into this… It’s nobody’s business… Either way…” he wrote.

In the early ’90s, Spelling also famously dated Brian Austin Green, who played David Silver, the love interest of Spelling’s Donna Martin.

“He was a little bit of my everything,” Spelling told Roe. “We grew up together. I think I was always in love with Brian.”

Jason Priestley opens up about hooking up with Tori Spelling: http://t.co/vuGAHBdWlS pic.twitter.com/mCTJyjSRaH

— E! Online (@eonline) October 5, 2015

Spelling was also asked about her other costar Luke Perry.

“From the very first episode Luke Perry was on, I had a mad crush on him,” the actress confessed. “What everyone felt on TV, we all felt in real life.” However, the two kissed — and that was all.

So what do you think about Tori Spellings revelation? Are you surprised?