PRIME Minister Malcolm Turnbull has described his meeting with Barnaby Joyce as “frank” and “warm”, but said he did not say sorry for the Deputy Prime Minister.

The pair met at the Commonwealth Parliament Offices in Sydney for over an hour on Saturday, where the two leaders discussed their public spat regarding Mr Joyce’s affair with a former staffer.

When asked today what they discussed, the PM would not provide details, but said the talk was “friendly and constructive”.

He was asked if he had apologised to Mr Joyce, but said: “No, I’ve got nothing to apologise for”.

Mr Turnbull did not back down from his comments on Thursday, saying he had said what we wanted to on the issue and would not repeat it today.

On Thursday, Mr Turnbull described Mr Joyce’s affair with former media adviser Ms Campion as a “shocking error of judgment” causing “a world of woe”.

That provoked an angry response from Mr Joyce on Friday, who said the prime minister’s remarks were “inept” and “unnecessary”.

It is understood Mr Joyce on Saturday indicated his concern was more about the forcefulness of Mr Turnbull’s comments and less about their substance. Both agreed to move forward in the national interest, a government source told AAP.

‘SLEEPING WITH YOUR STAFF IS BAD PRACTICE’

Earlier today, Treasurer Scott Morrison said sleeping with your staff was “bad practice”.

His comments come after it was reported that a secret WhatsApp group was set up by a group of National Party MPs to try and bring down Mr Joyce.

The Sunday Telegraph reports that support for the embattled Deputy Prime Minister dropped after news of Mr Joyce’s affair with staffer Vikki Campion broke.

That was when the secret WhatsApp group of National MPs was set up to look at ways to oust Mr Joyce.

Another WhatsApp group that included all National MPs however showed support for the Deputy PM.

Nationals MPs toldThe Australian Mr Joyce’s position was “untenable” and demanded he step down before the next party room meeting on Monday or face a leadership spill, after a public war of words with the Prime Minister.

Mr Morrison told Insiders that a ban on ministers having a relationship with a staff member in the wake of the Joyce scandal was not about being “moral police”.

“This is not moral police. You’re missing the point, Barrie. It doesn’t matter if you’re married or single. You shouldn’t sleep with your staff. It’s a bad practice,” he told host Barrie Cassidy.

“It doesn’t ... It’s not conducive to the good running of your office and the performance of your duties. And that’s the public interest point.”

Mr Morrison said this “political culture” had been going on for decades.

“That took an enormous amount of courage, because look, of course we knew, Barrie.

“Everyone would say, you can’t police it or private is private. I’m sorry — if you sleep with your staff, it’s not private any more, it’s public, because you’re a minister in a position of responsibility and power, over those who work for you.”

‘IT’S AN INTERNATIONAL EMBARRASSMENT’

Greens leader Richard Di Natale told ABC on Sunday that Mr Joyce’s position as Deputy PM was “terminal”.

“I think it’s terminal, and I think it’s only a matter of time before Barnaby Joyce has to step aside,” he said.

“The question is — is he going to drag this on for days or possibly weeks, or is he goes to do the decent thing — put the national interest ahead of his own personal self-interest — and do it quickly?

“It’s become an international embarrassment. We’ve got the Prime Minister of the country and the Deputy Prime Minister having duelling press conferences criticising each other.

“There’s only within course of action now — that is that Barnaby Joyce needs to resign, or the National Party need to replace him.”

Former prime minister Tony Abbott also waded into the public stoush to take a veiled swipe at Malcolm Turnbull.

“The general rule I always observed was that one party doesn’t give another party public advice,” Mr Abbott told reporters in Melbourne. “If a member of parliament has something to say to another member of parliament he or she should knock on the door or pick up the phone.” He also criticised Mr Turnbull’s changes to the ministerial code of conduct banning sexual relations between ministers and their staff.

“There was a perfectly good code of conduct in place,” Mr Abbott said. Earlier on Saturday, Liberal senator Ian Macdonald called for Mr Joyce to be demoted to the backbench on account of his actions.

“Barnaby would have known it would derail the government’s line, the government’s focus and it really is giving Bill Shorten a free kick,” Senator Macdonald told the ABC.

“Clearly, his path is that he’s got to take a very, very low profile, I hope on the backbench for, you know, a few months.” “It’s just got to end,” he later told Fairfax media.

Labor MP Pat Conroy described the entire scenario as a “soap opera”. “It’s a valiant defence of the indefensible,” he told ABC News. “There’s a massive question to answer. Malcolm Turnbull said on Thursday that Barnaby needed to consider this position. That’s code for saying, I need you to resign.” However, hope remained for Mr Joyce with Nationals MP Michelle Landry telling The Australian that the Nationals leader had the support of the party room — “at this stage”.

“He is having a week off and then we’ll have our party room meeting Monday after next and we will see,” she said.

But the bottom line, according to Greens leader Richard Di Natale, was that Mr Joyce has put self-interest above the national interest.

Serious question marks remained around conflicts of interest, the soliciting of gifts and misuse of public funds.

“And now we have the stability of this government called into question,” Senator Di Natale said from Melbourne.

“Does he care more about himself or the country? That’s the question.”

- With AAP