MAFS fans first became aware that there would be a runaway groom this season when the trailer was released in early January.
"In all of our years of this experiment, this is unprecedented," expert John Aiken is heard saying, as he steps out of his car and knocks on someone's door.
"Everyone's going to want to know about it," another groom is heard whispering before a bride adds: "Did you hear one of the grooms... is gone."
As this situation pans out in the trailer, the voiceover confirms the fact... "for the very first time, a groom does a runner."
The sneak peek did not reveal who the groom could be, however, the news had many MAFS fans putting on their investigative caps to figure out who the mystery groom could be.
The rumours surrounding the drama suggested that the runaway groom was 39-year-old Simon Flocco which was later confirmed. The speculation was originally formulated around Flocco due to the low-resolution picture used for the cast list, which features high-res professional photos of the rest of the cast members.
A source spoke to Yahoo Lifestyle revealing that the producers used a picture Flocco that he had already sent in.
“The picture of Simon is one he submitted to producers himself during pre-production to show them his suit,” the source said.
“Shortly after filming his backstory and the groom’s bucks party, he changed his mind about doing the show and quit.”
Simon also spoke to Daily Mail, sharing that he initially tried to leave the show.
“MAFS wasn’t what I thought I wanted at this point in my life, that’s all,” he said.
“I just felt bad for whoever they set me up with. I did initially leave, but they managed to coax me back… I gotta look out for myself.”
It has been reported by Yahoo Lifestyle that Flocco has been replaced by Stephen Stewart, a hairdresser from Perth.
Married At First Sight Australia airs Monday to Thursday, 7:30pm, and Sunday, 7pm, on Channel 9 and 9Now.