Mc Cormack attempted suicide twice in the wake of the arrest.
He felt guilty about how his family and friends had been dragged into the mess.
He declined to comment when approached at his home last month.
Both men will be sentenced by the state's District Court next year.
Mr Macedone - who regularly commentates on criminal law matters for the TV network - had worked on stories with Mc Cormack.
He only knew him professionally, as someone who was 'fascinated by the legal system'.
'Sam, I've been arrested,' Mr Macedone recalled Mc Cormack saying. I found it a bit confronting.'I said, hang on, I'll be there straight away.'Mr Macedone found Mc Cormack at Redfern police station.
But all the while he was keeping a secret stash of photos and videos of children 'engaging in sexual activity' - and sharing them with others.
The teacher, then 27, and the Nine Network personality, 43, met over Skype instant messenger on April 30, 2015, court documents for Mc Cormack revealed.
'I'm 27, gay, single, love young bs (boys)', Reale said.
It's understood Mc Cormack told psychiatrists he longed to go back to the time when he was 11-years-old, a happy schoolboy in Adelaide.
'He longed to get back to that period of time,' Mr Macedone said.