He dotes on the boy. Unfortunately the boy is intellectually sub-normal, a likely consequence of the generations of inbreeding. He has an unannounced son with his de-facto 4th wife.
His eldest son does not have any claim to the throne. He had totally disowned them and broken all contact with the 2nd wife. Only the daughter is royalty and she's a fashion designer. It's his youngest son that has claim to the throne the crown Prince even though he has divorced his mum.