It seemed pop star Ronan Keating had managed to salvage his 14-year marriage after cheating on his wife with a dancer.
But the singer has parted with Yvonne, 37, almost two years after admitting his affair.
The 35-year-old told friends the couple could not save their relationship despite trying to stay together for children Jack, 13, Missy, 11, and Ali, six.
A friend said: "They have both done their best to make it work, but they have not been able to.
"It's heart breaking for them both. They're still living in the same house and, of course, their children come first, but they have split up."