Fiance feels 'disrespectful' looking at my nudes.

so I never had an issue in the three years we have been together with my fiance watching porn. but about five months ago something just clicked and I've voiced to him that for so many different reasons that I was no longer okay with it, mainly that he would sneak off and spend 20 minutes in the bathroom looking at porn, whether it be our bathroom or a public restroom. at this point it's not even that he still looks at porn it's that hes able to look me right in the eyes and lie to me when I ask him about it. he has made a really good effort to stop but of course it's been tough, i.e it's not an easy habit to break, especially since he doesn't understand exactly why it bothers me and it's not a choice he's making for himself, which I can understand.

Point is, a couple months ago I started sending him nudes upon his request. even though he says he likes looking at them, I still catch him looking at porn. and I mean yeah he'd look at mine for a second and them immediately go on pornpics.

he finally told me yesterday that he does like my photos but he feels like it's disrespectful to get turned on by them and masturbate to them so he keeps going back to pornpics.

I'm just don't know what to do. is there anyway I can convince him it's not disrespectful? I took those pictures so he could use them for that reason. I told him I felt even more disrespected that Ive told him.over and over again my feelings regarding porn, sent him nudes, and he still looks at porn. sometimes right after we have a huge discussion over it.

I mean come on. we have sex. he's always and I do mean always, trying to look at and touch my boobs and butt and even my vagina. when we take showers together he won't stop looking. so why won't he use my pictures. that's why I took them. so he has them to look at when I'm not around.