People asking how anyone knows the majority of men watch porn (occasionally at least) - no-one knows for sure but we can base our experience, and mine is that the vast majority of men I will known - partners, friends, acquaintances, colleagues, relatives etc (where I have had the opportunity to find out) watch porn. If you appear to be non judgemental, they will tend to be more open/truthful.
I've had a relationship with one man who didn't watch porn, had tried it but said it didn't do much for him, hd preferred to fantasise and bout sexual encounters or experiences he had. He's the only one u can think of though.
I do agree with the posters who say that op is more likely to find herself in a relationship with a man who (at least occasionally) watched porn than one who never does, should she end the relationship with her current partner.
A lot of men may also go to ground with it if asked outright, or if its made clear it's unacceptable and offensive to op.
Some proportion of men may stop (or try to change to ethical porn) if they were talked to about the (real) concerned about exploitation, trafficking etc.