"I was a young girl," Tori Spelling tells host/super fan Louise Roe
Credit: Everett (2); Rex USA

Tori Spelling is about to kiss and tell.

The actress is giving some insight into the real behind-the-scenes drama of Beverly Hills, 90210 in honor of upcoming Lifetime’s TV movie about the cast, and she admits that she hooked up with two costars: on-screen love interest Brian Austin Green and another leading man.

Spelling, 42, waxes nostalgic about her relationship with Green, 42, back in the ’90s during a sneak peek at Lifetime’s Tori Spelling: Celebrity Lie Detector, in which she answers juicy questions with a polygraph expert.

“I just got chills. I was a young girl,” Spelling tells host/super fan Louise Roe. “Brian and I were the youngest, we were 16, and I remember the first time I shook his hand, and I fancied him!”

Roe, 33, then presses Spelling into confessing that she had sex with a second original cast member. They remove Ian Ziering from the running, which leaves Jason Priestley and Luke Perry.

“Half my friends don’t even know this!” Spelling says nervously.

So who’s the lucky guy? Tune in to Lifetime on Oct. 3. at 10 p.m. ET to find out. The Unauthorized Beverly Hills, 90210 Story airs at 8 p.m. the same night.