Rajwinder Singh has pleaded not guilty in the Supreme Court to the murder of Ms Cordingley, 24, at an isolated far north Queensland beach on October 22, 2018.
Ms Cordingley drove to Wangetti Beach, north of Cairns, for a Sunday afternoon walk with her dog on October 21, 2018 and never returned.
Tyson Franklin on Thursday testified that he had met Ms Cordingley earlier that month when he gave her a podiatry assessment.
Mr Franklin said he had "feelings for her" and believed the pair had "chemistry".
Under cross-examination by defence barrister Brydie Bilic, Mr Franklin admitted he lied to police on October 22, 2018 when he said the pair had not been physically intimate.
Mr Franklin said he had actually spent the night at Ms Cordingley's home on October 14 and left in the early hours of October 15.
"You lied about your relationship?" Ms Bilic said.
"I didn't tell it in full," Mr Franklin said.
Lead defence barrister Angus Edwards previously told the jury that there were a number of other potential suspects in Ms Cordingley's death, including her boyfriend Marco Heidenreich.
Mr Heidenreich previously testified that he had no involvement whatsoever in Ms Cordingley's death.
Mr Franklin told police he got the impression that Ms Cordingley wanted to break up with Mr Heidenreich.
"She was not happy. She wanted to live by herself," Mr Franklin said.
He agreed that he had exchanged many flirtatious text messages with Ms Cordingley via phone and Facebook messenger.
The jury previously heard Mr Heidenreich had access to Ms Cordingley's phone and Facebook account during their relationship.
"Literally saw you five minutes ago, don't even care. It doesn't bother me what happened last night," Ms Cordingley texted to Mr Franklin after he spent the night at her home.
The last text message Ms Cordingley sent was to Mr Heidenreich at 3.17pm on the day she died, informing him that she was going to pick up Mr Franklin from Cairns airport that evening.
Mr Franklin testified that Ms Cordingley never showed up at the airport and he took an Uber ride home.
Mr Heidenreich previously testified that he did not see Ms Cordingley's message about Mr Franklin until hours after it was sent.
The trial is due to run for another four weeks at Cairns before Justice James Henry.