For all those saying, well he shouldn't do it if it makes you uncomfortable... Wow how selfish. Perhaps if he is 'meh' about porn, its ok to ask he doesn't do it, or he doesn't do it where you can see, or that he does do it where you can keep an eye on him... but to disallow something.
We have had a real "issue" in our relationship with porn in the past--looking at it in secret, having it on MY computer in secret without mentioning it, porn having a real effect on our sex life, etc. And FWIW, I had *no issue* with the porn until it got to the sneaking around and lying point. He knows that I constantly reserve the right (a right that I have only exercised once or twice) to look at the history on his computer at any time and he has to be OK with me looking at his email accounts at anytime.
Selfish? I suppose that I don't see "disallowing" things in a relationship as selfish--it's just part of the give and take and every couple has to decide those boundaries. I may "disallow" porn, I am "disallowed" from going out and say, purchasing a horse without discussing it with him first, even though I could afford to. Now, I think it would be kind of cool sometimes to go out and do something like purchase a horse without discussing it first, and I was a horse lover WAY before DH came into the picture, and if he didn't care one way or the other I might just go and do that. However, I know that it would upset him and at some point in a functional relationship respecting the other person's feeling has to be more important that my personal wants.
IMHO, it is FAR more selfish to know that something really upsets the other person and to just say "**** you, I'm doing it anyway." If that's going to be the attitude, why be in a relationship?
Also, I would fervently disagree with the idea that having more sex=less time looking at porn. If the person has an issue with it the amount of sex will often have little effect. Actually, in some cases excessive porn usage actually leads to a man becoming less interested with sex with his partner.
And FWIW, I find romance novels boring--give me a good mystery any day--lol.