The former policeman accused of murdering a television presenter and his Qantas flight attendant partner offered to plead guilty to one count of manslaughter.
Beau Lamarre-Condon made the claim on Friday morning as he pleaded not guilty to two counts of murder in the NSW Supreme Court.
Lamarre-Condon allegedly shot dead Jesse Baird, 26, and Luke Davies, 29, at Paddington in Sydney's eastern suburbs in February last year.
The onetime celebrity chaser reportedly briefly dated Mr Baird before the Network Ten identity began a relationship with Mr Davies.
Lamarre-Condon said on Friday he had previously tried to admit to killing Mr Baird.
