Stark said he was very sorry for his actions and knew what he had done was wrong and he should have stopped. He made a voluntary appearance at the police station.
The girl's father read out a victim statement in court and spoke of the "great sadness" about what Stark had done to his daughter. He said his daughter was yet to realise how used she had been by Stark.
Stark's selfish actions had broken the wellbeing of the girl's family, her father said.
Stark's name had previously been suppressed but the father asked for name suppression to be lifted.
Stark's lawyer, Andy Schulze, said Stark accepted what he had done was criminal. He was receiving counselling through Mana Social Services.
Judge James Weir said "there is not just the emotional harm to the complainant who remains somewhat confused about this but the incredible stress and anxiety for the family".
Judge Weir said Stark was well liked and had a contribution to make.
He had been in his current job for four years and enjoyed ongoing support from his employer.