Former couple communicate through his mum Mairead
The couple, whose divorce was finalised in December 2006, have fallen out over how to raise daughters Molly, 7, and Lilly-Sue, 6.
Brian and Kerry, both 29, have resorted to communicating through his mum Mairead.
‘We split up over 5 years ago and I haven’t spoken to her in well over four years,’ he told Ireland’s Late Late Show.
‘We can’t speak to each other. I wish it was different but we can’t agree on anything and it just becomes fighting and aggression.’
Brian is now engaged to Aussie singer Delta Goodrem.
Kerry is also mum to Heidi, 2, and Max, 1, with husband Mark Croft, 39.