Sex in celebrated Cider House Rules novelist John Irving's books is usually a "depressing" affair because he spent years searching for satisfaction after losing his virginity - at 11.

The writer first had sex with an unnamed woman when he was just a boy and admits his teenage years were far from exciting as a result.

He explains, "If you have sex with an older woman and then you compare that experience with your first amateur gropings with a girl your own age, the problem occurs that the sex with the older woman was better - even though it was a crime."