The facts seem short of what it will take to sue him as a cyber bully.
You should contact a family law lawyer (your divorce lawyer) and get a restraining order. You say your ex has money. The family law guy may have a thought or two of how to pursue a settlement.
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You definitely a question for your family law attorney. In FL, however, I believe you will find it difficult to get a restraining order unless there has been violence in the past. I agree with my colleague that it may be difficult to bring a civil suit for cyber bullying.
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