A female teacher accused of sexual offending against a schoolboy maintains the pair never went to a Kapiti Coast motel for sex.
The boy has told the High Court at Wellington about a visit the pair made to the motel in early 2014 but giving evidence today, the teacher denied the encounter.
The court has heard the Wellington woman became pregnant after the visit -- the only time it's alleged the pair had sex -- but had an abortion.
The boy, now in his mid-teens, also drew an accurate diagram of the motel's layout.
In a tense examination of the woman, Crown prosecutor Dale La Hood asked her if the boy was making up stories.
"It's my evidence I was there by myself," the teacher said.
"He clearly knows exactly what goes on in that hotel more than I do. I have no knowledge about how and why he'd know about that."
Mr La Hood suggested the boy knew because he was there having sex with the teacher.
She denied that.
"Even if he was there with me, how would he know about the main motel? I don't even know about that," she said.
"He wasn't there with me so I don't know how he knows that exact layout of that motel."
The teacher, whose name is suppressed, is on trial facing charges of doing indecent acts, unlawful sexual connection and sexual violation.
She is accused of kissing the boy and having oral sex between 2011 and 2014, in the northern Wellington suburb of Porirua, as well as the one instance of sexual intercourse.
The boy has also told the court how the teacher made him hide under a tarpaulin in the back of her truck so the teacher's mother wouldn't see him at the motel.
The teacher said that wasn't true and she took her car to the motel. She hadn't thought about whether it was possible for the boy to have hidden in such a way.
"It wasn't on my agenda to stuff a boy under a tarpaulin. It would be inhumane."
Mr La Hood said it would be particularly inhumane if it was to avoid the boy being seen at a motel so the teacher could have sex with him.
"That didn't happen," she said.
The teacher said she was told by "a number of adults -- basically anyone that came into contact with [him]" that the boy appeared to have an infatuation with her.
At one stage the teacher found out the boy had told others his age the pair had sex.
Mr La Hood asked why she didn't tell anyone about that. The teacher said she was concerned for the boy but had eventually mentioned it to a teaching colleague, a claim Mr La Hood questioned.
The trial is expected to finish this week.