Giuliana Rancic certainly didn’t take the high road in her new memoir when it came to her former boyfriend Jerry O’Connell.

Instead, Giuliana Rancic dished on cheating allegations and poor treatment by O’Donnell in her memoir, Going Off Script: How I Survived a Crazy Childhood.

Sure, the fashion commentator shared her story of cancer and childhood. But, the biggest revelation is Giuliana Rancic’s blatant accusation that Jerry O’Connell cheated on her with Spice Girl Geri Halliwell while they were dating from 2003 to 2004. She also cited several incidences where he treated her with insensitivity.

Giuliana Rancic wrote of the moment she discovered that O’Connell was cheating on her with Spice Girl Geri Halliwell.

“I was being two-timed for one of the lesser Spices?” Rancic asked O’Donnell.

Jerry O'Connell is responding to his ex Giuliana Rancic's cheating claims: http://t.co/sAh2Ed3iNe pic.twitter.com/VWN6MhGcq9

— JustJared.com (@JustJared) April 23, 2015

According to the memoir, Jerry O’Connell’s response was pretty insensitive.

“Yeah, I know. I’m so sorry. I don’t know what happened,” he replied with “as much emotion as the customer-service representative who tells you your bags missed the flight,” according to Giuliana Rancic.

Wanna win a luxury spa getaway in LA and hang w/me?! Enter the #GoingOffScript Sweepstakes at http://t.co/qWVkDcaMSj pic.twitter.com/twZpq7ZaLY

— Giuliana Rancic (@GiulianaRancic) April 23, 2015

In 2004, O’Connell once again strayed with Rebecca Romjin, said Giuliana Rancic.

“Little did I know he was in the VIP area, talking up Rebecca. As a prelude to feeling up Rebecca,” she wrote in her memoir.

A week later, the actor allegedly flew to Las Vegas and stopped communicating with her.

Giuliana Rancic said she went to his home hoping to confront O’Connell but received the big breakup notice.

“Nope. Sorry, homegirl. Things change, but you take care, OK?” he reportedly said.

Jerry O'Connell responds to @GiulianaRancic's claims that he cheated on her. http://t.co/TsjUFIjufP pic.twitter.com/1wziiam1fO

— EntertainmentTonight (@etnow) April 24, 2015

While not denying Giuliana Rancic’s allegations, O’Donnell took the high road on Thursday’s Watch What Happens Live.

“I don’t want to say anything negative,” he said About Giuliana Rancic’s accusations. “She was a very nice girl. We had a very fun time. It was decades ago.” He didn’t confirm or deny Rancic’s allegations.