Based just on what you have written here, this will not cause police interest or a criminal investigation or prosecution. But it may be very potent evidence in your family law and/or adoption proceeding.
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If I were a judge I would not admit such "evidence" for any purpose. It cannot be authenticated and proves nothing.If a judge decides to terminate biodad's parental rights--making his consent moot--it will be based on abandonment, not Facebook posts.
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