Kelly was 14 when it all started, and while she wasn’t supermodel material she was certainly pretty, fairly well-developed and quite popular with the boys at our school. We had been pretty close during our pre-teen years, and were often left alone, so were very used to each other’s company. There had been a few experimental games of ‘doctor and nurse’ in previous years, but they weren’t entirely sexual, more out of curiosity and boredom. However when I hit the hormone years I started to get very, very curious about girls.
Naturally my step-sister, being the