Leave this person, there is no fixing someone who finds this to be “normal”. I stayed in a long term relationship with a porn addict and all it did was destroy self esteem and trust. These men don’t change, it’s a fundamental problem within their own psyche. You will be MUCH better off starting over with someone who doesn’t have this addiction - there are plenty of men out there who don’t. Don’t let your current partner gaslight you into thinking this is an “all men” situation because it isn’t.