Cabinet minister Christian Porter was warned by then-prime minister Malcolm Turnbull about his public behaviour with a young female Liberal staffer, because of Mr Turnbull's concerns he could be at risk of compromise or blackmail.
A Four Corners investigation can reveal Mr Porter raised eyebrows among political staffers in 2017 after being seen with the young woman — who was working for another Cabinet minister — at Canberra's Public Bar.
At the time, Mr Porter had a wife and toddler at home in Perth.
Shortly before appointing Mr Porter to the role of Attorney-General, Mr Turnbull warned him he would be out of the ministry if he heard of this public behaviour with young female staff again.
The investigation can also reveal Mr Turnbull's infamous "bonk ban" was not just aimed at former deputy prime minister Barnaby Joyce, but also at Mr Porter and the now-Acting Immigration Minister, Alan Tudge, who was having an affair with a female adviser in 2017.
Both Mr Porter and Mr Tudge have campaigned on family values.
So he has form?