Details of a steamy affair between Married At First Sight's Mikey Pembroke and Stacey Hampton have already surfaced – but OK! has exclusively learned that there's more to the drama than first thought.
While Mikey, 29, says that he slept with Stacey, 26 – and she's denied it – evidence will be unveiled at the upcoming MAFS reunion to reveal what really happened.
"The truth will come out," our show spy tells.
"There are text messages and other evidence that will hint they spent the night together. For example, some contestants saw her clothes left in Mikey's room that night. Stacey can't hide it any more!"
While Mikey was still married to Natasha Spencer, 26, and Stacey was wed to Michael Goonan, now 29, he says he and Stacey enjoyed a steamy one-night hook-up.
Mikey adds it happened once his marriage was all but over. But it's Stacey – who vehemently denies the accusations – who's left shocked when new details emerge at the reunion.
"Stacey really doesn't have much to say in her defence," our source says.
"It's as though she's dumbfounded!"
So what actually went down?
"They got drunk one night and it happened while they were with Aleks Markovic and Ivan Sarakula," our insider tells.
Stacey's husband Michael isn't happy when he finds out.
"He came into the reunion really cocky and he laughed at the rumours that she slept with Mikey – but then the texts came out and he slowly went into himself," our insider admits.
"He was devastated because he actually had feelings for Stacey at that time."
Perhaps Michael, who was embroiled in a cheating scandal with Hayley Vernon, didn't enjoy the taste of his own medicine?
Last month, Stacey revealed exclusively to Woman's Day that while Mikey asked to partner swap with her – she adamantly denies any fling with him.
"Mikey's a narcissist," she blasted.
"I barely even spoke to him on camera. [During filming] I was either with my partner or at home visiting my children," she said.
Whatever went down, the truth will finally be revealed when the reunion episode airs next Wednesday.
Bring it on!
It looks like Adelaide businessman Michael has all but confirmed that he and bride Stacey are no longer together – by jumping back onto Tinder!
The dating profile was shared this week by another MAFS star, Nasser Sultan, who warned anybody who saw the account to report it to Tinder.
"'He's a disgrace," Nasser said, before admitting Michael's relationship with Stacey was "fake" throughout the entirety of filming! Wow!
After being told that the reunion is all about Mikey and Stacey's alleged one-night stand, a spy reveals that Hayley Vernon was so mad they stole the spotlight that she walked off set early!
"She wanted all the night to be about the Hayley-Michael hook-up but it's all about the Stacey-Mikey hook-up," a source spills.
WATCH: The experts kick Hayley and David off the show: