04/07/2008 at 03:00 PM EDT
Rob Lowe is taking preemptive action against a former family babysitter, claiming in a blog post Monday that the woman is demanding $1.5 million from the actor and his wife "or she will accuse us both of a vicious laundry list of false terribles."
"It is an attempt to damage and humiliate not only my wife and me, but our two young sons as well," Lowe, 44, writes in an article titled, "Household Betrayal," on The Huffington Post.
"My family is devastated at this betrayal; this woman worked in our home and traveled with us off and on for seven years, without complaint," he adds, and posts what he alleges are two friendly text messages from the woman after she quit her job.
Lowe, who does not name the woman in question, says his wife "tried to mentor this young woman" and be supportive about personal issues, but "we never saw this coming."
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