Tori Spelling Confesses She Slept With Jason Priestley While on 'Beverly Hills, 90210' Show [VIDEO]

Tori Spelling dropped a bombshell on 'Beverly Hills, 90210' fans after the 'Unauthorized Lifetime' movie aired on October 3. On 'Tori Spelling: Celebrity Lie Detector,' the 42-year-old admitted she had a “summer fling” with co-star Jason Priestley during the show’s 10-year run.

Spelling, who answered juicy questions from a polygraph expert while strapped to a lie-detector test, said she had sex with her ex-boyfriend Brian Austin Green before admitting she'd slept with another one of her hunky castmates.

"Half my friends don't even know this," Spelling said, before admitting that she'd had a relationship with Priestly.

"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," she admitted. "You know, we stayed great friends for the rest of the run, and beyond that, but yeah, we had that one summer fling."

Tori also revealed that her other co-star Luke Perry kissed her on her 18th birthday! “It was like for a second, but it was like for a young girl that was everything,” she said on the special. “But no, we never had sex.”

Spelling also dished on the cast's infamously turbulent relationship with Shannen Doherty, as they banded together to have Shannen fired after things got out of control on set.

When Shannen arrived late to a taping, Ian Ziering blasted her: “Ian turns to her and he said, ‘You are a c***t,'” Tori said. “She looked at him, and she goes, ‘What did you say?’ and he said, ‘Can’t Understand Normal Thinking.'”

During the special, Spelling also revealed that her father, producer Aaron Spelling, left her $800,000 in his will. While the actress admits she was "always independent" she was still left feeling confused by the relatively small inheritance.

"It still confuses me," she said, "I know he worked so hard ... I don't really understand the thought process behind it."

Watch the clip below.

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