When Joel Betts' former girlfriend came to move her things out of their apartment, he stabbed her and then himself, saying: "We will die here together, then we can be together for eternity."

After Betts stabbed her several times, Samantha Holland and weaken him.

Stabbing victim Samantha Holland and Joel Betts, convicted of wounding with intent to murder.

"If we are going to do this together, then I should have a turn with the knife," she said.

Ms Holland then stabbed Betts - a former Australian Survivor reality show contestant - in the stomach and twisted it until his intestines came out, later escaping the Chippendale apartment by swinging off the third-floor balcony.