Faith, 23, is a medical student from Edinburgh
It was a few years ago, when we were both living with our parents and didn't get much time alone. One Saturday afternoon we went to see an old film in one of those tiny arty cinemas and there was hardly anyone there.
We were in the back row and the film was naff, so I decided to spice things up a bit. I started touching him and he was so turned on by it. Ever so quietly, we had sex in the dark. We were careful not to make much noise, but the sound of the film masked it I think. I was a bit worried someone would see, but it was fine. We got away with it!