"I, Michael Pembroke do hereby declare that while at the Sky Suites apartments I had sexual intercourse with Stacey Hampton," he wrote in a declaration before undergoing the examination.
After four hours of rigorous questioning, the polygraph expert said: "It is my opinion that you are in fact being truthful to that issue. There was no strong emotional responses indicative of deception to the declaration."
Mikey scored an average of 10 on each answer— a truthful answer should be three or more meaning he more than tripled the required criteria.
After receiving his results and no doubt breathing a sigh of relief, Mikey's brother took to Instagram to show his support, admitting his family has been unfairly dragged through the mud since filming wrapped.
She also slammed Nine Network, arguing their evidence is "nonsense".
Since last night's wild episode aired, Natasha has opened up about exposing the scandal that ruined her marriage, admitting it was an extremely difficult time for her.
"I was pretty pissed off because I found out he slept with Stacey on the night of our one month anniversary on the show, Aleks [Markovic] told me," the finance analyst told The Daily Telegraph.
"He ditched me to have sex with another bride! At first, I was totally beside myself and so angry. But my philosophy is not to hold onto any negative energy."
While Mikey's sneaky behaviour frustrated her immensely, Natasha was more perturbed her television husband and single mum Stacey had ulterior motives.
"In a way, I felt that Stacey and Michael made such a mockery of the experiment because in the end you find out they stayed until the end despite knowing they both cheated on each other," she said, adding she's still unsure why the law graduate is in denial.