"No!!! This news has truly broken my heart. Kristoff was pure & so kind. I will never forget how wonderful he was to me and everyone else he came into contact with. He was just a good, good man," she wrote.
St. John, who has performed on "The Young and the Restless since 1991," was hospitalized in October 2017 after reportedly threatening suicide.
The incident happened shortly before the third anniversary of the actor's son's suicide.
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