Geecy Rebucas skipped her cooking school lectures in the morning to spend time with her chef lover, Amin Sthapit. She said she would make the afternoon class.

But about 11am her boyfriend came home to discover the pair having sex in the double bed that dominated the small flat. The security chain on the door slowed him down. Once inside, he picked up a chef's knife with "a significant blade" and stabbed Mr Sthapit repeatedly.

Stabbed to death: Amin Sthapit. Credit:Sydneytoday.com.au

Roy Abanales Tabalbag has pleaded guilty to manslaughter but not guilty to murder.

His defence argues Tabalbag lost self-control after being provoked in the Darling Point bedsit on November 11, 2013. Public defender Eric Wilson, SC, said an ordinary person in Tabalbag's position could have acted in the same way.