"It was heartbreaking for me because all of a sudden, the family had this different identity," the 54-year-old began, who chose to leave the patriarch after her fellow sister wife Christine Brown had split from him a year before. "But I still felt like I should be loyal out of obligation."
"If [Christine] hadn't left, I might've stayed," she explained.
Janelle then spilled the breaking point for the couple's marriage was a massive blowout fight between her and Kody in December 2021.
"This burden came off me, and I thought, 'Wow. Okay, it's over,'" she divulged.
Shortly after Janelle and Kody's breakup, the 54-year-old's relationship with his first wife Meri Brown also fell apart after three decades together.
In January, it was revealed that Meri was leaving Kody after the duo had a "raw and honest" discussion.
"A lot goes into the decision to terminate a 33-year marriage," Meri explained. "I do wish we had some conversations earlier. But I can't live my life with regret."
Meri shared that as the family works through the series of fallouts, she is "keeping the doors open and saying yes." Janelle also expressed hope for her future.
- 'Sister Wives' Star Kody Brown Admits He 'Could Have Done a Lot Better' as a Husband Following 'Painful' Splits
- Surprising Facts Fans May Have Forgotten About 'Sister Wives' Stars Janelle & Kody Brown's Marriage
- Kody Brown Says His Marriage To Janelle Brown 'Diluted' His Relationship With Ex Meri Brown
"I don't have any regrets," Janelle said. "The experience is what gave us the life that we have now. I would do it all again."
The reality TV personalities confession comes ahead of the Season 18 premiere of Sister Wives, which will air on Sunday, August 20, at 10 p.m. ET on TLC.
Never miss a story — sign up for the OK! newsletter to stay up-to-date on the best of what OK! has to offer. It’s gossip too good to wait for!
People reported on Janelle and Meri's comments.