I'll never sing about my affair – Ronan
Ronan Keating has vowed never to write a song about his marriage split.
The 36-year-old said he would never pen a song about the 2011 break from wife Yvonne.
"It wouldn't be fair for me to do that. I made mistakes and I caused enough hurt," he said.
"I'm about positivity now and putting my best foot forward and being the best man I can be. I'm not going to talk about the past in song – definitely not."
Keating also said he will not be involved in Yvonne's 40th birthday celebrations in February.
"That's her life and mine is mine. We are separated now," he said.
He added, however, that he was "delighted" for Yvonne, who has landed a role as a regular chef on ITV's This Morning programme.
The singer was speaking as Boyzone prepared to kick off their BZ20 tour at the 02 this Thursday.
Preparations for the 20th anniversary tour hit the headlines earlier this year over confusion as to whether permission had been given for the use of late member Stephen Gately voice and image in the shows.
But his family in Dublin say they were always 100pc in favour.
The band's new song, Rust, will recount how Boyzone grew up together as a five-piece, experiencing the same rags-to-riches story and how their close bond helped them survive as a four-piece after Stephen's death in 2009.
"As a writer, you can't avoid your emotions and your feelings and you draw from them," Keating said.
"Losing Stephen was a massive low point in our lives, but as long as the four of us are together, he is still in the room. That is what we feel. So the more we are together, the better for us."
The Gately family are not expected to the attend the Dublin concert.
Stephen's sister Michelle said: "I couldn't go and see Boyzone, it would be just too emotional to see the four lads up there singing and dancing without Stephen. I couldn't bear that."