A woman accused of having sex with a boy she befriended when she taught him in primary school has argued that they had a close, loving relationship but it was never sexual.
Kathryn Joy Woods, 58, pleaded not guilty in the Victorian County Court on Thursday to 14 charges including sexual penetration, indecent assault and gross indecency brought against her by the complainant, who is now aged in his 40s.
The charges relate to the 1980s when the complainant was 13 years old and Woods was 24.
As the trial opened, prosecutor Gary Hevey told the jury Woods had been the boy's grade five teacher and got to know his family well when she privately tutored him.
The tutoring arrangement led to an ongoing friendship between Woods and the complainant's family, which extended into the boy's secondary school years.
Woods was regularly asked to care for him when his parents were absent, and it was not unusual for Woods to take the boy on day trips or holidays.
The first time the pair allegedly had sex, Mr Hevey said, was after Woods had taken him to see the '80s film Risky Business, about a teenager left home alone while his parents are out of town.
The complainant was staying at Woods' flat that night and usually slept in a spare room, but because it was a hot night, they pulled their mattresses into a common area, Mr Hevey said.
It was the boy, then 13, who initiated sexual activity with Woods, he said.
The complainant asked Woods the following morning if they had "made love", to which she replied that they had.
What followed, the prosecutor said, was an intimate sexual relationship. There were love letters penned by both parties whenever Woods was working in outback Queensland, and secretive sexual rendezvous whenever she visited Melbourne.
In one letter Woods signs off with an "x", indicating kisses, and writes that she expects "to collect on all the kisses she'd sent him, so he should be prepared to deliver", Mr Hevey said.
In another letter, Woods allegedly finished: "I love you, as always ... forever and ever, Amen".
Woods' lawyer Colin Mandy told the jury the concept of a generally close, loving relationship maintained by letters and regular meetings was not in dispute.
But, "there was never any sexual contact", he said.
"There is simply no witness in this case other than (the complainant) who will support his allegations."
Mr Mandy said the jury would hear evidence that the complainant's alleged sexual relationship with a teacher was a "story" he had been telling his mates since he was a teenager.
The pair's alleged sexual relationship continued on and off until 1993 and it was not until 2014 that the matter came before police, the court was told.
Woods is on bail and the trial continues on Friday.