Jonathan Porter, 48, accountant

When I was a teenager in the Eighties, I saw pornography in magazines such as Razzle and Fiesta that didn’t turn me on at all. It seemed cartoonish and degrading. I grew up thinking that pornography was bad and demeaning to women. It actually put me off sex.

Then at university I had my first serious girlfriend. I was surprised when she told me that she used pornography to get herself in the mood. She was the first person to tell me that if you call it erotica then it suddenly feels middle class and OK. She was right. She had a video of sexy scenes from various films and it really worked.

However, when I got married my wife wasn’t