The boyfriend of missing Brisbane teenager Tiffany Taylor has called the man accused of her murder a maggot as he stepped from the witness box.
Harrowing details of the pregnant call girl's life were laid bare on the second day of a murder trial for Rodney Wayne Williams, 65.
The 16-year-old disappeared on July 12, 2015, after allegedly meeting Williams for a paid sexual liaison arranged through the Oasis website.
Her body has never been found.
Williams has pleaded not guilty in the Brisbane Supreme Court to murdering Tiffany after allegedly picking her up from the Waterford Motor Inn, south of Brisbane, mid-morning.
Messages between the pair show Williams agreed to pay $500 for sex, but he says it never happened.
Tiffany's boyfriend, Gregory Hill, says the teenager was "normal" when she left their motel room, saying: "See you later on."
She never returned.
The court heard Mr Hill and Tiffany got together when he was 38 and she was 12.
Tiffany's mother, Leanne Dillon, told the court she was disgusted when she found her daughter giving Mr Hill a lap dance at their family home soon after.
Chloe Taylor told the court her younger sister had begun chroming and smoking cannabis on a regular basis about the same time.
Tiffany began drifting from the family, she said on Wednesday, as she talked about the "physical closeness" she had observed between her sister and Mr Hill.
Mr Hill told the court Tiffany pursued him when asked about his relationship with the then child.
By the time she went missing, Tiffany and Mr Hill had been together for four years and lived in hotels, often paid for in cash by her sex work.
Mr Hill denied being intimate with Tiffany while she was a child but said they were together after she turned 16.
He also said he was unlikely to be the father of her unborn child.
"I had my doubts about that.... There was no intimacy between me and Tiffany that went that far, so there was no way it could have been my child," he said.
Mr Hill also denied pimping Tiffany out or knowing she was selling sex.
However, 300 messages about meeting men and money were found on his phone.
Asked is he was violent towards the teenager Mr Hill said: "No."
But her mother and sister told the court Tiffany sometimes turned up bruised and once with a black eye.
"Sometimes he'd be violent but Tiffany always loved Greg, she forgave him all the time," Ms Dillon said tearfully.
On the day she went missing, Mr Hill said he tried to call Tiffany numerous times after becoming concerned for her.
But Williams' defence lawyer Eoin Mac Giolla Ri challenged his claim, saying investigators had found no record of the calls.
As he stepped from the witness box, Mr Hill said: "Make sure you lock the maggot up" before being cautioned by Justice Ann Lyons.
Earlier, prosecutor Philip McCarthy QC told the jury that after Williams picked up Tiffany he drove to Larapinta industrial park where "something happens" while he is stopped for about 20 minutes
He said Williams then drove to the Esk-Ferndale region, where police have searched dams and bushland for Tiffany's body, without success.
The trial continues.
Australian Associated Press