Hanginin, we still don't know if this kid exists or not. All we know is from the one "your son is graduating" message on FB. Dh just wanted to know what to do in the event they/he shows up on our doorstep. One Google search will give her our address. Granted, it's unlikely because we live across the country from his ex, but still. It's fucked up. Our lawyer said dh did the right thing by blocking her on social media, and actually said dh should have been firmer in telling her to cease all contact. Haven't heard anymore from her, so hopefully it was just a crazy attempt to get his attention and the mystery son doesn't exist.