The 49-year-old "The Real Housewives of Beverly Hills" cast member spoke out in a series of tweets Tuesday after Kelsey gushed about fourth wife Kayte Walsh and their family in a new interview.
"I don't begrudge him his happiness," Camille wrote.
"What's unnerving is that fact I was there to help him get through some of his hardships and supported his career and his sobriety. I was rt by his side and he acts like I never existed that's disappointing."
"We were together through his success," she said.
"I was there during the writers strike and the cancellation of Back to You. We moved the company to our home in Malibu. I sat at his bedside for 8 days straight while he was in the cardiac intensive care unit in NYC. I read him poetry and helped wash his hair. Now I don't exist."
Kelsey married Kayte in February 2011, just two weeks after his divorce from Camille was finalized.
Camille and Kelsey, who are parents to 16-year-old daughter Mason and 13-year-old son Jude, initially split in July 2010 after 13 years of marriage.
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"We have two beautiful children and I was blessed to have shared those years of my life with him. We have both moved on. Just wish it ended in a more civil manner," Camille tweeted.
Kelsey said in a new interview with Closer Weekly that life with Kayte and their three children, 5-year-old daughter Faith, 3-year-old son Kelsey and 19-month-old son Auden, is "fantastic."
"[Kayte] has a pristine and extraordinary ability to love," the actor said of his wife. "She loves being pregnant and being a mom."
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