It’s hard to hide the truth when you’re strapped to a lie detector and questioned by no less than polygraph expert, Louise Roe.

It’s no wonder Tori Spelling bared it all, including the man she slept with.

Last Saturday night, on Lifetime TV’s Tori Spelling: Celebrity Lie Detector, Spelling revealed that aside from dating Brian Austin Green, she also had a summer fling with another Beverly Hills, 90210 co-star, Jason Priestly.

Luke Perry or Jason Priestley?! Find out in #CelebrityLieDetector TONIGHT at 10/9c following #Unauthorized90210! https://t.co/WWlvTEt2Qa

— Lifetime (@lifetimetv) October 3, 2015

Spelling admitted that she slept with ex-boyfriend Green, but also revealed that she had sexual relations with Priestly behind the scenes of the show. “It was a summer fling, it was off set, it was our version of, like, a summer romance, the 90210 version and that was it,” Tori Spelling admitted. “You know, we stayed great friends for the rest of the run, and beyond that, but yeah, we had that one summer fling.” But not only that; Spelling also spilled that Luke Perry kissed her on her 18^th birthday celebration with the 90210 stars.

Tori Spelling reveals her 90210 romances with Jason Priestly and Luke Perry http://t.co/41JVCP34F8 pic.twitter.com/KjCameGBAG — People magazine (@people) October 4, 2015

“It was, like, for a second, but it was, like, for a young girl that was everything,” she said. “But no, we never had sex.”

Spelling has been married to Canadian-American actor Dean McDermott since 2006. They have four children together.

Tori Spelling also opened up about her inheritance after being rumored to be broke last year. Spelling revealed that her father, the late film and TV producer Aaron Spelling, left her only $800,000 in his will.

Despite her mom Candy Spelling’s explanation of her relatively small inheritance, Spelling still couldn’t understand the reason behind it, even though she claimed she has always been independent.

According to her mom, it was because of Spelling’s lifestyle.

“It still confuses me,” she said, “I know he worked so hard… I don’t really understand the thought process behind it.”