Alex Rodriguez's heartbroken wife Cynthia believes her hubby has been "brainwashed" by kabbalah-pushing pop icon Madonna and lured away from his family, an A-Rod confidant said Saturday.

In a bombshell interview with The Post, Dodd Romero -- Rodriguez's former trainer and godfather to his two daughters who spent last week in Paris with Cynthia Rodriguez -- said he and C-Rod believe the Yankee superstar has been gradually drawn away by Madonna's allure.

"Alex, God bless him, is lost," A-Rod's ex-pal lamented. "I think he got pulled in by the dark side, if you can say that nicely. He's totally brainwashed."

"She believes it's what ruined her marriage," Romero added.

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