Lisa Lutz gave evidence yesterday in the ACT Supreme Court trial of Christopher Griffin, 28, who is accused of attempting to murder David Maly at the Lanyon Marketplace on July 18, 2004.

Under cross-examination by Griffin's lawyer, Bernard Collaery, Ms Lutz denied she and the accused were still seeing each other when the alleged knifing occurred.

''I put to you that you had arranged to meet with [Griffin] that Sunday night for a sexually pleasurable moment,'' Mr Collaery said.

But Ms Lutz told the court she and Griffin had broken up three months before she started dating Mr Maly, whom she had been seeing for a couple of months prior to the incident.

The court heard Ms Lutz called her former partner earlier that evening seeking $1000 for goods she had bought on his behalf.

Ms Lutz said Griffin asked her to come to his workplace to collect $500, but she declined because she had heard the chef and his colleagues making derogatory remarks about her on the phone.

The witness told the court she did not feel safe with Griffin.

''We were friends but that didn't mean I trusted him.''

She said they instead arranged to meet at Griffin's grandparents' house in Banks but later changed the venue to the Lanyon shops. Ms Lutz gave evidence that when she and Mr Maly pulled into the Lanyon Marketplace car park, Griffin bashed her window with the handle of a chef's knife, climbed on to the bonnet of Griffin's Jaguar and tried to kick in the windscreen.

She said she saw Griffin threaten Mr Maly with a knife.

''He said, 'I'm going to get you, c---. I'm going to kill you, c---,''' she told the court.

Asked why she and Mr Maly did not drive away from the scene, Ms Lutz said it had not crossed her mind.

''It all happened so quickly, I didn't know what to think.''

The jury heard a recording of a triple-0 call made by the distressed woman just minutes after her then-boyfriend was stabbed in the chest.

Asked if Mr Maly was conscious, she told the operator that he was.

''But he's not going to be awake for much longer,'' she said. ''I know the person who did it, too.''

The trial continues today.