edward moore working in his first job as assistant director of music at king edward 's school in witley , surrey , when he had consensual sex with the 16-year-old student in his office .
after the incident , the 24-year-old said to her : ` oh my god , you have to forgive me , you will hate me one day .
' moore , from ascot , berkshire , was jailed for nine months after admitting two counts of abusing a position of trust and sexual activity with a girl aged 13 to 17 years .