MAFS Shocker: Bride Confesses to Groom Hookup!

A set of cheeky 'bathroom confessions' filmed at Daily Mail's Married At First Sight Final Dinner Party has lifted the lid on explosive off-camera secrets —

During the candid video series filmed in the bathrooms at the Ovolo Hotel in Woolloomooloo on Sunday, the MAFS stars didn't hold back as they shared their most unfiltered thoughts.

In one standout moment, bride Rebecca Zukowski, 51,

'A bride and a groom who were not matched played tongue hockey. Do you want to know who it is? Bec and Farmer Luke [Fourniotis],'

According to sources, the hook-up occurred at Gia Fleur's birthday bash earlier this year.

Elsewhere, fellow bride Alissa Fay confirmed she hid her relationship with Australian Ninja Warrior star Nathan Ryles for months - . 

'I may or may not have hidden my relationship... and lied to everyone,' Alissa admitted, as she cuddled up to Nathan. 

'The mirror in our bedroom has seen some things!' Nathan added.

Alissa wasted no time moving on from her shock split with David Momoh - and before Sunday night's Daily Mail party stepped 

Nathan shared a loved-up photo taken at  eatery Bill & Toni's to Instagram of him and Alissa alongside fellow bride Bec Zacharia.

Alissa looked radiant in a sleeveless olive-toned zip-front top, wearing her blonde hair in soft waves and opting for a bronzed, glowing make-up look. She beamed at the camera, appearing relaxed and happy.

Meanwhile, Nathan kept things casual in a white T-shirt layered under an open button-up shirt, flashing a wide grin as he leaned in between the two women.

The caption over the image read: 'Might need some earplugs' - hinting at a lively night out between the group.

Alissa's relationship with on-screen husband David dramatically imploded at Final Vows,