The Married At First Sight relationship experts are best known for sitting back and watching the drama unfold.

But it looks like they could be upping their rules and calling out misbehaving contestants in this year’s season.

In a trailer for Sunday’s episode, psychologist Mel Schilling snaps at a male participant for his ‘sexist’ language during a commitment ceremony.

The promotion aired at the end of Wednesday’s show, herring a rare glimpse into the expert losing her temper.

She snarls: ‘A tip from me to you: don’t use language like that, don’t speak about women like that, if you want any chance of a relationship with a woman.’

It’s unclear who she is speaking to.

Married At First Sight continues Sunday at 7PM on Channel Nine.

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Gold 104.3 Melbourne