I only shared my knowledge of my divorce with my children after they had become independent adults, and only after they had asked me why it all happened.
That's when I pulled out the P.I. reports, the pictures, the court transcripts, the divorce decree, the bank statements, and other relevant documents. Then we went over each one, piece by piece, and in chronological order. Just the facts (like the fact that she divorced me to marry her wealthy boyfriend, and that her efforts to "demonize" me to them were both baseless and malicious).
They said a lot of things like "Uh-huh", "I thought so", and "So that's why!" They also told me that if they had known more at the time about what their mother had been up to, they would have called her out on it more often.
As it stands, my children have been on "difficult" terms with their mother ever since.
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No love for Hamas, Hezbollah, Iranian Leadership, Islamic Jihad, other Islamic terrorist groups, OR their supporters and sympathizers.