Dean McDermott
Tori Spelling met with Dean McDermott's ex-wife Mary Jo Eustace for an episode of "True Tori." Lifetime

Parts of Tori Spelling and Dean McDermott’s tumultuous relationship have been caught by Lifetime’s “True Tori” cameras, and a major blowup the couple had before he quit the show will air, E! Online wrote. The fight ensued after Spelling met with McDermott’s ex-wife, Mary Jo Eustace, who separated from the star after she found out he was cheating with Spelling.

The former “90210” star wanted to meet with Eustace to apologize for the infidelity that took place eight years ago. Though Eustace accepts Spelling’s apology, the reality star feels uncomfortable after reading a love note McDermott wrote his ex-wife right before he left her for Spelling. The note apparently conjured up insecurities Spelling has been battling since he cheated on her in 2013 with mistress Emily Goodhand.

"I walk in, and Dean has everything in order," Spelling told the camera. "He's made dinner for the kids, their homework is done and there's a beautiful bouquet of flowers with a card. It's a love note from Dean to me, and I just read this love note from Dean to Mary Jo. Oh my god how ironic is this."

Tori Spelling
A picture of Emily Goodhand might be revealed on Tori Spelling and Dean McDermott's reality show. Lifetime

McDermott, who was under the impression that Spelling and his discussed his oldest child Jack, who Eustace and McDermott share together, can tell something was wrong. "You got me flowers and wrote me a beautiful note," Spelling said. "It's just, the timing is just bizarre because she just handed me a note that you wrote her."

"Why would she do that when you're going to talk about Jack…," McDermott retorted. "Why would she bring up stuff between her and I?"

"She wanted to show me that in her mind, you guys didn't have a bad relationship," Spelling said.

"It's a lie…I don't know what to tell you, babe," McDermott said. "The whole thing about having her on the show too-- the more she comes across is as this wonderful, loving person, people are watching going like 'Yeah what the f--k is Dean's problem?'" He added: "I gave her a great life…she's f--king crazy. She's f--king delusional, now I'm starting to get really mad."

Despite their argument and McDermott quitting the show, the couple was spotted holding hands Tuesday, Us Weekly wrote. "There is still love between them… they will last," a source told the news site. They have four children together: Liam, 7, Stella, 5, Hattie, 2, and Finn, 24 months.

Follow me on Twitter @mariamzzarella