If this is about some feminist stance the truth is All men have watched porn and a lot of men have either payed for it or at least been to strip clubs. Let it go or go for women.
The truth is not all men watch porn. I always wonder how people can say that, I've never asked all the men In my life or who I come across what sex things they like, do you ask your dad, brothers, and your friends husbands if they watch porn?
Lots do yes, but it's perfectly ok to not want to be with a man who purchases sexual consent or treats women's bodied like a commodity. Absolutely fine if a woman like yourself is ok with that stuff but it's also absolutely ok to have that as a boundary.
Op doesn't have to be a lesbian because she doesn't want to be with a man who thinks sexual consent is something to be purchased. You also make it sound like women don't watch prob or use strip clubs or purchase sex workers. Would you tell a gay man he should be straight if he didn't want a partner with a history of purchasing men to fuck?
My dh doesn't use porn, he hasn't paid to use anyones body and he had no need to lie because when we met, I had zero problem with any of it, it was him for who porn was a deal breaker for, it was him who made me see just how scummy and shady the adult industry can be. He had zero need to lie at all. He has left lads weekends away early when they've decided to spend the weekend "sharing" a couple of sec workers, he's come home for stag nights early when they head to strip clubs and he did this when he was single too, I've been present when he's been mocked by men he's worked with for leaving nights out or not going out at all when he's had to work away with people who have tried to pay for a woman for him.
Ops husband should have been honest from the start so she could make her own informed choice, maybe if he said it's a one off when he was young, like lots of men have done, then she maybe could have looked past it, but if he still thinks it's ok to purchase sexual consent and lied to OP knowing it's a dealbreaker for her and that she's not want to be in a relationship or have sexual with him, then he's a cunt, he could have let her go and find himself one if the many women for who it's not a deal breaker. The fact he chose to lie to keep her in a relationship with him adds to that the entitled to women attitude some of the men who purchased consent have.