But now New Idea can reveal that Martha, 30, has been fooling Michael, and the rest of Australia, this entire time.
“Martha has no intentions of staying with Michael,” says our insider.
“She’s only ever seen this experiment as a way of boosting her profile and launching a reality TV career and she knows that by keeping up appearances while the show is still on air is in her best interest.
"But as soon as it’s all done and dusted, she plans on dumping Michael.”
Despite her plan to give him the flick, friends say Michael, 27, sees it as the real deal.
“He’ll be heartbroken if she breaks up with him,” dishes one of his mates.
WATCH: Is Martha dumping Michael because she found out he previously dated her BEST FRIEND?
“He’s fallen for her hard and we’ve all seen how she’s changed him – and not necessarily in a good way. Now it’s all about how he looks and taking selfies. He was never like that before so we’re all disappointed.”
Meanwhile, it’s believed Martha was seen getting a little too close for comfort with other guys at co-star Ines Basic’s birthday celebrations last month.
“She was loving the attention,” says an onlooker.
“If it was my partner, I would not be happy."
For more, pick up the latest copy of New Idea on sale now!