The Irish boyband member, who briefly split from wife Yvonne last year after he confessed to having an affair with a dancer, said that all he wants is for 12-year-old Jack, 10-year-old Marie and 5-year-old Ali to be happy.
According to The Daily Telegraph, Yvonne told Ronan that he had "broken their marriage" and it was "beyond fixing" after his confession, but they later reconciled and are currently spending time together on the set of his new movie Goddess.
He said: "I love my wife and my family is everything to me. I want my kids to know they're loved. That's all we need to teach our kids. When kids know they're loved, they take on life differently."
Ronan revealed last month that his recent tour with Boyzone was the "toughest" he's ever been on but insisted that he was a "good boy" and went to bed early every night. He also said that the tour had a "nice vibe" because the children joined him for some of it.
The star will shortly begin filming the next season of the Australian version of The X Factor, on which he is a judge and mentor.