David Cassidy Opens Up About Complicated Relationships With His Kids Following Dementia Diagnosis

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David Cassidy is getting candid about his complicated relationships with his children.

The 66-year-old actor, who revealed earlier this week that he had been diagnosed with dementia, says he's "never had a relationship" with his daughter, Katie Cassidy.

WATCH: David Cassidy Reveals Dementia Diagnosis, Says He Was 'In Denial' Yet 'Always Knew This Was Coming'

"I've never had a relationship with her," Cassidy toldPeopleof his only daughter, who has starred in Gossip Girl and Arrow.

"I wasn't her father. I was her biological father, but I didn't raise her," he explained. "She has a completely different life."

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Katie, whose mother is model Sherry Williams, may have a "different life" but Cassidy couldn't be more proud.

"I’m proud of her," he revealed, noting that he and Katie are no longer in contact. "She's very talented. It's hard for me to even accept how old she is now, like 30."

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Cassidy has a much closer relationship with his son, 26-year-old Beau.

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"He's just one of the best people you'll ever meet in your life, and it's that that I'm proud of," he said, confessing that Beau, whose mother is Sue Shifrin, has been one of the few people aware of his dementia diagnosis. "He's such a beautiful person."

"He knows that I'm just a little off," Cassidy explained. "Sometimes he cocks his head at me a little bit and goes, 'Dad do you remember?' and I say, 'No, I know I do, I remember.' He'll give me reminders once in a while."

Since his diagnosis, Cassidy has decided to stop touring as a musician, revealing that he wants to take the time to "enjoy life."

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"I want to focus on what I am, who I am and how I've been without any distractions," he shared. "I want to love. I want to enjoy life."

See more on Cassidy in the video below.