Speaking to BW Magazine, the 30-year-old brunette says she doesn’t tolerate when he chews gum.
'I have a weird phobia against it. I can't stand it,’ she told the publication 'As soon as he comes in the house chewing gum I'll say 'Spit that out!''
Byrne also revealed Matt is quite strict when it comes to his bedsheets.
‘He's really obsessed with having the sheets on in the correct way. The top sheet can't go on inside out or he'll have a tantie and have to undo the bed,' she explained.
This article originally appeared on New Idea.