The alleged killer of Milly Dowler "joked" about her disappearance a week after the schoolgirl went missing, a court has been told.
Levi Bellfield's former partner Emma Mills said that when she asked what he had been doing that day, he said: "What, do you think I've done Milly?"
Miss Mills earlier told the Old Bailey that Bellfield had "disappeared" on the day Milly went missing, and she could not get through to his phone.
She was asked by prosecutor Brian Altman QC if they had ever talked about the 13-year-old, who went missing after leaving Walton-on-Thames station in Surrey.
Miss Mills, 33, said: "Yes we did, because it was so local, as anyone would." She said they spoke about it a week later when she was decorating.
"I was asking him again about the Thursday he'd gone off, because I thought he was with another woman. I was just painting. He said 'Oh, why do you keep going on? What, do you think I've done Milly?' I didn't ask him. It's just so awful," said Miss Mills.
"I was so used to him making horrible remarks and jokes about things. I just thought, it's disgusting, not even funny."
Bellfield, 43, denies abducting and murdering Milly and attempting to kidnap 11-year-old Rachel Cowles in March 2002. Milly disappeared after leaving Walton-on-Thames station to walk home.
The prosecution claims Bellfield was living yards away and murdered Milly in his flat before dumping the body. Six months later, her remains were found in woods 25 miles away.
In 2008 Bellfield, a former wheelclamper and bouncer, was convicted of the murders of Marsha McDonnell, 19, and Amelie Delagrange, 22, and the attempted murder of Kate Sheedy, 18.