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We would like to nominate Yolanda Foster as the new president of the Ex-Wives Club. She is clearly an expert at finding the silver lining in painful situations.

The "Real Housewives of Beverly Hills" star sat down with Andy Cohen on "Watch What Happens Live" Tuesday, April 12 and said she didn't know her marriage to music producer David Foster was going to end, but doesn't harbor any ill feelings.

"I know exactly the day — November 15," the reality star, 52, said of the moment David told her the marriage was over. That was a conversation I had [with David]." The former couple publicly announced their split two weeks later.

Andy asked if the former model and reality star felt blindsided by her ex-husband's decision, and she admitted that she was. "Yeah, I didn't think that was the end of the road. I would have hoped to wait until I got 100 percent well," she said.

Yolanda, mother of Gigi, Bella and Anwar Hadid, believes her long battle with lyme disease is what destroyed her relationship. "You can't imagine how much it takes for a man to take care of somebody that's sick all the time," she said in a preview clip for from next week's RHOBH reunion (airing on Bravo on Tuesday, April 19).

"David didn't change, I'm the one who changed," Yolanda insisted. "And this is the outcome of that."

She solidified her position as Most Honorable Scorned Ex-Wife Ever when she discouraged haters from giving David a hard time for leaving his sick wife. "I don't think anybody should criticize that," Yolanda said.

And while she didn't walk away from the marriage with a big payday after signing a prenup in 2011, Yolanda is grateful for what they had together. "I married for love not for money," she said. She also admitted that she's in touch with David occasionally. "We're in touch a little bit, here and there," she added.

Yolanda said she didn't feel comfortable confiding in the other "RHBH" cast members about her troubled marriage. "After this season I didn't feel that any of the women were a safe place to go to and discuss my marital problems," she said. "I confided in Erika [Girardi] and she was by my side and that was the only place I felt safe."