All men look at porn to some extent. Trust me on this. I'm a man, and every single male friend I have - that I know well enough to ask - does indeed periodically look at porn.
Before the web, relatively few men did. I didn't. It was a ballsache to find hard core porn, and when you did, it featured freakish orange, shaven American women, with globular, motionless plastic tits who appeared to be bone dry all through the act.
Thanks to the web, no matter what it is you like, your kinda porn is now out there for free.
Eg I like slightly fleshy 30 to 35ish brunettes with their own breasts. The porn biz regards this as a niche taste, amusingly, but it's catered for (you just search www.youporn.com for "mature" + "natural").
I honestly think some women are going to have to recalibrate their way of thinking about porn, now that it's so ubiquitous. A big reason for the existence of the technology this site uses is porn. It was the porn biz that wanted to get its wares into people's homes more easily. Porn's not personal. It's not a big part of men's lives. I like black cars better than red cars, but my entire life isn't given over to the pursuit of black cars.
I don't want to meet or fuck any of the women on porn. As a woman, you may have noticed that we quite like looking at you lot naked. If we can do so for zero effort, then obviously we're going to do so. Lewd beautiful fleshy brunettes doing filthy things, costing no money and my mother wouldn't approve of her. What's not to like?
But it's a bit embarrassing if your bird knows about it. Like buying Penthouse in W H Smith from a female checkout operator.
If he starts looking at escort sites, you may have a problem. The pictures are too clean to work as porn, but the girls are ready to meet him for £150. Hmmm.
I've used Facebook and stuff, but only to check up on school mates and indeed to look at the odd ex to see what they look like now. My OH has these trust issues too. It is actually simpler for me to filter what she finds out about in the first place, than to waste hours of my life allaying her paranoid and loony suspicions.
I just don't see that she's entitled to an explanation of everything I do. It's my business, and if I want to live in a police state, thanks but I'll move to North Korea.