Brooks Shocking Betrayal and Becs Exposed Lies!

This season of Married At First Sight has descended into chaos - and not the kind producers can neatly package into a teaser.

What began with a messy Dinner Party #2 is now spiralling into betrayals and alumni pile-ons - with Chris Nield defying producers to reveal what really happened when his wife Brook Crompton abruptly walked off the Commitment Ceremony.

For the latest edition of MAFS Insider, Daily Mail senior reporter Ali Daher spoke to Chris about the shocking conclusion of Sunday night's episode... 

The truth about Brook's 'abrupt' exit 

Chris says the 'runaway bride' moment - which wasn't the first time Brook had tried to hightail it - was something entirely different behind the scenes.

To recap: during the show, Brook's exit was made to look like she simply walked out, leaving Chris blindsided and humiliated.

But according to Chris, they had actually made plans to leave the show at the same time on amicable terms - they had even booked their flights - until production intervened.

'We'd already decided,' Chris says. 'We told them in the morning that we were done. We were leaving.'

That wasn't what happened on screen, however. 

Whatever plans they had were thrown out the window when expert Mel Schilling went for the jugular during the Commitment Ceremony, tearing shreds off Brook for her bullying behaviour at the recent Dinner Party. 

In that moment, Brook decided she wanted out immediately - and wouldn't be waiting for Chris, who was none the wiser to her sudden change of plan.

When it dawned on him that Brook - who'd slipped off the couch under the guise of using the bathroom - wasn't coming back, he instantly knew how the producers would spin the narrative.

'As soon as they said she'd left, I knew what they were doing,' he says

'I stood up and said, "We're not f***ing doing this." I wasn't going to let her be framed as abandoning me.