A man who pleaded guilty to stabbing his lover’s husband told the court planning the attack had improved their sex life.

While this was happening, Vicky Soteriou was crying and hysterical, or pretending to be hysterical.

Ari Dimitrakis, 48, appeared in Melbourne’s Supreme Court yesterday, pleading guilty to a charge of intentionally causing serious injury, the Herald Sun reports.

The newspaper says Dimitrakis said he had had discussions with his lover, Vicky Soteriou, 43, about plans to murder her husband to heighten their sexual enjoyment.

The court heard the self-employed chauffeur stabbed Mr Soteriou, a consultant civil engineer, five times in the neck and chest outside a Fitzroy restaurant in January, after he had been celebrating his 44th birthday with his wife, the paper says.

Counsel for the defense, Con Kilias, said the pair arranged for Dimitrakis to attack Mr Soteriou after the couple had reached their car, the Herald Sun says.

“While this was happening, Vicky Soteriou was crying and hysterical, or pretending to be hysterical,” the Herald Sun quotes Kilias as saying.

The Age reports that Crown prosecutor Andrew Tinney, SC, told the court that the couple plotted to kill Mr Soteriou for his assets, including $2 million in superannuation and a family house in Ivanhoe.

Vicky Soteriou is awaiting a pre-trial committal hearing on charges including attempted murder.

The plea hearing before Justice Paul Coghlan continues.