The Boyzone singer - who separated from his wife Yvonne last week following revelations of an affair with backing dancer Francine Cornell - was told to leave his £2.5 million home north of Dublin, Ireland, after he flew in from Switzerland, where he had been performing solo shows.
A source close to the Irish star told the Daily Mirror newspaper: "Ronan is praying the separation is only that and doesn`t translate into a divorce. He is desperate to make amends."
He is also said to have dismissed suggestions Francine was anything more than a casual relationship.
According to the Daily Star newspaper, he told friends: "She meant nothing - it was just a fling and a mistake.
"It`s cost me the thing most dear to me in the world. I`ve wrecked everything. I just hope it`s not too late."
Meanwhile, Yvonne is said to be considering forgiving her cheating husband, but is going to make him sweat until Christmas time.
A source told The Sun newspaper: "It will take up to six months but they`ll get there. She will not tolerate any more nonsense now and he will have to earn her trust all over again.
"It will be on her terms and she is likely to ask him to cut down on his hectic workload and devote more time to his family."
Ronan, 33, has now taken the couple`s three children, Jack, 11, Marie, nine, and Ali, four, on a trip to the exclusive K Club in County Kildare, Ireland, where he was spotted playing golf flanked by minders.