I think he's stated something along the lines that he may have "accidentally" opened a porn video.
Why are MPs scrolling through their iPhones anyway when they're in the House?
Like others, I feel sorry for his wife, but her comment, "that if women were "mad" with every man who watched porn "you would not have many wives in the world". has lessened my sympathy somewhat. Entirely missing the point.
... and not all porn is harmless either. Does she, or the men who watch, know that it's an industry into which women are frequently trafficked? And that some men have admitted that their addiction to it has led to them being unable to hold down normal relationships with their wives and girlfriends?
He just should not have been watching it at work, it's as simple as that.