The Olympic gold medallist and partner Mandy Loughlin took in the gig at the 3Arena in Dublin earlier this week.
"So of course the one time in the whole show she got up to go to the toilet and missed the whole song. And the host didn't exactly rule it out, saying: "You know stranger things have happened. "So we were at Westlife and she was all excited. I spent the whole song looking at where she was going to walk back from the toilet and then she just walked back when it was over. We got married this year but in all these 13 years she's always been saying 'you need to sing Mandy to me, you need to sing Mandy to me' and I was like 'oh my God I'm never going to sing it'. She missed her opportunity."