'You have been in a bubble of denial for the past five years, so a tidal wave of evidence of the happy family life you feel these cheaters stole from you is bound to be overwhelming...'

I can't recall ever reading a "Dear Abby" story quite like this, although it's not Abigail Van Buren but "Dear Prudence."

See: "Unbearable Betrayal" (via Instapundit).