The big deal is that it apparently bothers her, and that is OKAY. You don't have to accept that from him. Let him know exactly how you feel, be very specific and hold nothing back. Men are visual and I don't know if he will quit, but I know many men who have had major relationship issues because of the fantasy of pornography.

Just because others on here minimize it doesn't mean that you should. We all have the right to ask for what we want and need from our partner, it is then up to them to decide. Good luck.