Why Tori Spelling Doesn't Blame Dean McDermott's Mistress for Infidelity

April 24, 2014 — -- Before her husband confessed to his infidelity in December, Tori Spelling thought the couple's sex life was normal.

"For having four children and very chaotic schedules, I thought we had a very, very good sex life," she told Us Weekly.

Spelling and McDermott have been documenting the fallout from his affair last year in the new series "True Tori," which premiered Tuesday night on Lifetime.

Read: Tori Spelling and Dean McDermott: How He Chose His Mistress

McDermott came clean and even went to rehab for several addictions to save his marriage, he said.

McDermott and Spelling have four children -- Liam, 7, Stella, 5, Hattie, 2, and Finn, 1.

US first reported on McDermott's affair with Emily Goodhand while on a trip in Toronto. Even though the affair happened months ago, Spelling said she won't allow herself to look at Goodhand's picture online.

Related: How Tori Spelling Confronted Husband Dean McDermott for Cheating

"I have written her name in my phone multiple times for Google Images," Spelling said, "and when it comes up, I can't look at it."

Spelling doesn't blame Goodhand for the infidelity.

"I was called a home-wrecker and a husband-stealer," she added, referring to the fact that both Spelling and McDermott were married when they got together in 2005. "I remember thinking, 'If this ever happened to me, I'd be pissed at my husband.'"

"Dean did this, not her," she added.