The suit filed in Los Angeles County Superior Court claims handwriting experts said ledgers prove Philip Cyburt syphoned more than $3 million from Kitaen during the couple's four-year relationship, TMZ.com reports.
In addition to allegedly cooking her books, Kitaen claims the real estate executive sold several of her personal properties and kept the money.
Cyburt released a statement to TMZ.com saying, "The lawsuit took me by complete surprise and I have no further comment."
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