The first major cheating scandal of Married At First Sight 2025 is about to shake the experiment.
Billy Belcher was left devastated after discovering his bride Sierah Swepstone was secretly getting close to another participant.
Daily Mail Australia revealed that viewers will soon witness explosive scenes at a dinner party where Sierah is caught playing ‘footsies’ with groom Adrian Araouzou.
The biggest shock? Billy had no idea it was happening.
The 31-year-old admitted he was left ‘gobsmacked’ after learning about Sierah’s actions.
‘I had no idea that happened,’ the British-born plasterer said. ‘I did, however, know there was something going on between them. Awhina (Adrian’s wife) and I weren’t happy.
‘We signed up to be with our partners and when we watched them getting closer it wasn’t nice. It was very difficult to watch. I felt a bit sad.’
The scandal unfolds during Intimacy Week, when the participants are encouraged to build a deeper emotional and physical connection with their partners.
But while Billy was attempting to break down Sierah’s emotional walls, it appears she had already found comfort in another groom.
Billy assumed that with time Sierah would begin to open up to him, but he was devastated to learn that she had already confided in Adrian about her past – something she had refused to do with her own husband.
‘The last thing I thought when I packed up my life for this experiment would be my partner maybe having a connection with somebody else,’ Billy said.
How the secret affair unfolded behind closed doors
Daily Mail Australia can reveal that Sierah and Adrian’s connection had been developing behind the scenes.
Their flirtation escalated after a boozy night out during their first weekend in Sydney, culminating in a private late-night meeting at Sierah’s apartment.
Billy, unaware of the secret rendezvous, had been watching soccer with other cast members in a different room.
Just days later, Sierah and Adrian snuck off for an intimate dinner, keeping it hidden from their partners.
When rumours began swirling, Billy was blindsided at the commitment ceremony, where the truth came out in front of everyone.
‘Billy felt completely blindsided,’ a cast member revealed.
‘Sierah wouldn’t open up to him, but she did with Adrian. And he only found out in front of the rest of us. It was so embarrassing. I felt terrible for him.’
The betrayal left Billy feeling humiliated, prompting him to request separate sleeping arrangements.
Meanwhile, Awhina was equally hurt, having spent time bonding with Sierah, unaware she was being deceived.
‘She had every chance to tell Awhina,’ another bride shared. ‘Awhina and Sierah had spent the whole day together. She knew what she was doing was wrong.’
By the time the dinner party rolled around, tensions reached boiling point.
Billy and Awhina confronted their partners in front of the group, exposing the affair.
Shockingly, multiple sources confirmed that Sierah and Adrian had continued their flirtation in plain sight, even playing ‘footsies’ under the table while their oblivious spouses sat beside them.
The MAFS experts weighed in on the controversy, criticising Sierah for seeking the emotional connection Billy had desperately craved from another man.
Despite mounting backlash, Adrian downplayed the situation, insisting he was merely comforting a distressed castmate.
‘She was bawling her eyes out. I wasn’t going to let her sit alone in an apartment all weekend crying,’ he reportedly told fellow grooms.
Sierah has refused to comment on the scandal, but insiders reveal she is ‘angry and frightened’ about how the situation will play out on-screen.
Married At First Sight continues Monday 7.30pm on Channel Nine