After finding himself at the centre of a hotly contested he-said-she-said battle following his sudden exit from Married at First Sight earlier this year, Mikey Pembroke has gone to the extreme to set the record straight once and for all.

In exclusive footage obtained by Yahoo Lifestyle, the former groom sits down to take a polygraph test to iron out some of the messy contradictions to have emerged after he claimed to have slept with fellow MAFS castmate Stacey Hampton.

View photos Mikey took a polygraph to prove he had sex with Stacey Hampton. Photo: getrealentertainment_au More

In an exclusive interview, Mikey says he and Stacey found ‘comfort’ with one another after Michael was accused of cheating on the single mum with fellow bride Hayley, and after Mikey says producers forced him to leave the experiment.

Though Stacey denied the claim, Mikey has now taken the matter to science, sitting for the extensive test in an exclusive video.

After responding to the questions in a very tense environment, the groom was cleared of any falsehood by the operator, and even scored far above the standard number for truthful answers.

“I, Michael Pembroke do hereby declare that while at the Sky Suites apartments I had sexual intercourse with Stacey Hampton,” Mikey wrote in a declaration that was then grilled by the qualified tester.

View photos Mikey signed a declaration which he was then quizzed on. Photo: getrealentertainment_au More

“It is my opinion that you are in fact being truthful to that issue,” the man said at the conclusion of the test, confirming that Mikey scored an average of 10 on each answer.

For an answer to be considered truthful the cut-off score is three, meaning Mikey more than tripled the required criteria.

“There was no strong emotional responses indicative of deception to the declaration,” the tester explained.

Medical and legal professionals often disagree over the effectiveness of polygraph tests.

Dr Sophie van der Zee, who has expertise in forensic psychology told the BBC in 2018 that the tests often confuse truth-tellers for liars, but are better at showing when someone is telling the truth.

That said, in the same article Prof Don Grubin, who has trained polygraph examiners in the UK said the tests have an 80-90% success rate if carried out by a qualified tester.

Polygraph findings are not admissible evidence in court cases in Australia

Mikey has long insisted that his claims were true, though with Stacey refusing to budge on her position it remains to be seen whether she will have anything to say in response, and what exactly she might fire back with.

View photos Stacey denies the claims. Photo: Nine More

Mikey ‘pretty frustrated with the whole thing’

Later explaining the situation in an exclusive sit-down, Mikey says the pair were looking for some comfort and commiseration from one another.