Yolanda Foster Says She Felt Blindsided By David Foster Divorce, Doesn't Regret Signing Prenup

Yolanda Foster knows the exact date her marriage to David Foster ended.

The 52-year-old Real Housewives of Beverly Hills star appeared on Bravo's Watch What Happens Live on Tuesday, where she candidly answered questions about her split from Foster after four years of marriage.

"I know exactly the day -- November 15," Yolanda told host Andy Cohen about the day they decided to divorce, which they publicly announced two weeks later on Dec. 1. "It was a conversation, yeah."

WATCH: Inside Yolanda and David Foster's Shocking Split -- 'Distance and Her Illness' Drove Them Apart

The mother-of-three also confirmed that she signed a prenup prior to tying the knot, but had no regrets.

"I married for love, not for money," she stressed.

Although, she didn't exactly see the divorce coming.

"Yeah, I didn't think that was the end of the road," she admitted. "I would have hoped to wait until I got 100 percent well."

Yolanda was diagnosed with Lyme disease in 2012, and has been open about her health struggles. In December, she admitted to Cohen in another WWHL appearance that her disease "changed the dynamic" of her marriage to the GRAMMY award-winning musician.

"Unfortunately it was not strong enough to withstand the circumstances that came our way," Yolanda said. "Chronic long term illness is extremely challenging, not only for the person that's sick, but also for the caregiver. It for sure changed the dynamic of our relationship."

Still, her ex has defended her when it comes to her health. In a statement to ET in December, David said he was "frustrated" over headlines questioning the reality star's sickness.

"I have been by Yolanda's side over the past four years to the best of my ability as she battled with the complexities of her Lyme diagnosis," he said. "I am incredibly proud of Yolanda's determination and mission to find a cure, and how brave and open she has been by sharing her story in the hopes of changing the future for others."

WATCH: Yolanda Foster Reveals How Bella Hadid's Battle With Lyme Disease Shattered Her Olympic Dreams

ET chatted with David, 66, last month, who said that he and Yolanda are getting along just fine since the split.

"Her and I are really good," he said on the red carpet at UCLA's Institute of the Environment and Sustainability Gala. "I feel OK about it, and I'm just happy to be here. I'm fine being by myself."

Watch below:

EXCLUSIVE: David Foster Says He and Yolanda Are 'Really Good'

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