@jane6564,
I have no problem with your claimed 'obstinancy'. I feel what you are saying and your frustration.
His thoughts are just that...his thoughts. He should have the freedom to think whatever he wants ... otherwise it's a prison. The fantasy and the act of watching porn is
not another woman it's JUST his thought and a program. You can't own his mind. You do however have his heart!
You keep referring to these poerno films and has porn thoughts and fantasies in a way as though theyre REALLY another woman. 'He can't be arrested for thinking of robbing a bank...only the deed. Don't 'arrest' him for watching porn. He has different taste than you do.
He has your heart and you have his. That much is clear. Be happy with that and give him permission to fantasize how he wishes. that it freedom.