There were reports that the two artists were both guests at golfer Gary Player's 80th birthday bash in his native South Africa, where Keating, 38, serenaded the group with a rendition of traditional Irish folk song "She Moved Through the Fair".
However, Keating has dismissed the reports via Twitter.
"Hey @BrianMCFadden I hear we Bumped heads. Must have been when we were hugging about how much we love each other," he wrote.