Independent TD Jackie Healy-Rae threatened to withdraw his support for the previous government last November, according to documents released under the Freedom of Information Act.
Documents released to RTÉ's The Week in Politics show that in the early hours of 22 November he sent a signed fax to Government Buildings that read: 'Not alone did the Taoiseach of this country tell blatant lies to the Irish people regarding the IMF and the ECB but his Cabinet Ministers to a man were singing from the same sheet.'
He accused these ministers of 'collectively acting on self-preservation to the detriment of the Irish people.'
He added: 'I no longer can honour my word to this Fianna Fáil-led Government.'
Then he urged them to 'go before the people and stop this charade of spin and lies.'
Whatever was done to patch up this breakdown, there are no written records available, but by 2 February last, the day after the Dáil was dissolved, Mr Healy-Rae wrote one last letter to the Taoiseach.
'I (am) writing you an urgent note and I am expecting to hear from you in the days ahead for the R569 road and the eastern Kenmare Bypass. I want this money ringfenced for these two projects,' the letter read.
There was correspondence from Government Buildings too with former Taoiseach Brian Cowen writing to Mr Healy-Rae last June with some good news.
'Following our recent discussions on the matter, I now wish to confirm that I have spoken to my colleague Ms Mary Harney... who has agreed to appoint Cllr Michael Healy-Rae to the board of the National Treatment Purchase Fund.
'I am sure that Michael will make a fine contribution to the workings of the board.' he wrote.
But for whatever reason it seems Michael Healy-Rae was never appointed to the NTPF Board.
Later in October the fraught issue of the Dingle/An Daingean place name was the subject of another letter from the Taoiseach.
Mr Cowen promised that it would be dealt with in the Dublin Mayoral Bill.
'I also want to personally assure you that this amendment will proceed at Committee stage and the Minister will refer to this in his statement when the Bill is being published next week,' he said.
It was not always good news though. In 2009 Brian Cowen had to write that the horses in Killarney National Park would have to wear dungcatchers despite several written pleas from Mr Healy-Rae on behalf of the Jarveys.
The Taoiseach wrote: 'I have consulted my cabinet colleague Mr John Gormley. I am advised that the position is that the decision to introduce dungcatchers was only taken after a long process of consultations and investigations.'
Not exclusively concerned with local issues Mr Healy-Rae reported in February 2009 that: 'At my Clinic on Saturday there were over 120 people to see me in relation to the Pension Levy.'
Plus he also wrote twice to have the Dáil recalled in the summer months - once following the withdrawal of an Aer Lingus flight from Shannon and once to debate the country's finances.