Last December, Kate addressed rumours of the couple's marital woes in an interview with Stellar.
'It doesn't hurt my feelings, not anymore,' she said at the time.
'I think in the old days it did. There's no point in getting bogged down about what other people think is happening in my life.'
Trouble between the pair was also sparked when it was revealed that Stuart was residing in the NSW Southern Highlands while Kate and Mae remained in Sydney.
Kate has yet to respond to today’s speculation about her marriage.
