Singer denies sleeping with the actor
But Michelle, 28, says she wasn’t unfaithful.
‘I didn’t sleep with Matt,’ she says.
‘The only thing I did wrong was find him attractive and cute – which woman wouldn’t – and as a married woman I shouldn’t have been thinking this.
‘Nothing happened, we met in Ireland, got on really well and that was it.’
Michelle says the accusations have ruined her friendship with Matt, 21, who was dating dancing partner Flavia Cacace, 28.
‘[He] won’t even talk to me anymore,’ she tells OK!
‘I rang Andy after I saw the story, saying that he was out of order for blaming Matt.
‘But nothing happened because Matt was completely mad about Flavia.’
Michelle married Andy in a lavish ceremony 18 months ago.