“Sister Wives”: Kody Brown Admits to Sabotaging His Marriage to Robyn amid Divorce Chaos (Exclusive)

In PEOPLE's exclusive sneak peek at the third installment of the 'Sister Wives: One on One' special, Robyn shares that she is "a major place of mourning" that she and Kody are in such "different places" emotionally

Kody Brown and his wife Robyn are navigating the collapse of their family differently.

In PEOPLE's exclusive sneak peek at the third part of the Sister Wives: One on One special, the 54-year-old Brown family patriarch admits he is sabotaging himself and his relationship with Robyn “out of frustration and anger” after Christine, Janelle and Meri Brown left their plural marriage.

The family patriarch tells host Sukanya Krishnan that he wanted to “punish” himself. “I thought of myself leaving Robyn and having another lover and looking at this lover and going, ‘I don't love you. I'm in love with another woman. I'm in love with a woman that I left because I was too much a piece of s--- to manage the relationship.’ And what it was was just anger and I'm embarrassed.”

Related: Sister Wives: How Kody's 'Soul Mate' Connection with Robyn Led to His Family's 'Unraveling'

He acknowledges that his emotions lead him to have “bad behavior” which ultimately affected his relationship with Robyn, 45.

“These are my demons and that's like doing something that destroys myself,” he explains. “Christine's leaving and I'm just angry. So a lot of dark winds were going through me. A lot of devil, a lot of temptation, which would be destructive of my relationship with Robyn.”

“So I dealt with a lot of anger and she would get frustrated. My anger was a turn-off,” he adds. “It was scary. And the dumb thing is — because I'm so honest — I just share everything with her, so I shared stuff with her that was heartbreaking.”

He calls the revelations “terrible,” adding, “There's some things in a man's mind that should never be expressed.”

Related: Robyn Brown Traces 'Path' to Sister Wives' Plural Divorce to a Fateful Dynamic Shift That Started in Las Vegas

In a separate interview, Robyn also addresses Kody’s “self-sabotaging” behavior.

When asked if he was sabotaging their relationship, Robyn is reduced to tears as she shares, “He tries to. I have to stop him all the time.” She says his behavior includes picking fights with her over “dumb things.”

“We're in different places,” she admits. “Sorry, we're in different places about the bomb that went off on our family. And like, I'm in a major place of mourning and he's angry and he doesn't want to... He just wants to just go find whatever, you know? And I'm like, no, I can't feel like that.”

Related: Sister Wives' Robyn Grapples with Kody 'Rewriting History' as He Calls Out 'Bullying' in the Family

Robyn previously told PEOPLE that the departure of Christine, Janelle and Meri felt like a "death."

"It's [just] Kody and I, and we're getting through this and figuring this out, but it does feel ... like there was a death," she said. "And we're both going through a death separately."

"It feels like we're going through a death and we're both handling it differently. And we're in different places with it," she added, sharing how she's prayed and asked for "God's guidance and help" through a "very confusing time."

Three of Kody's marriages imploded within a span of 14 months. Christine was the first to leave in November 2021. A year later in December 2022, it was revealed that he had separated from Janelle. Shortly after in January, Meri confirmed that she and Kody had split after their relationship had been platonic and distant for years. Robyn is Kody's only remaining wife.

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Sister Wives airs Sundays at 10 p.m. ET on TLC.

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