MARRIED At First Sight Australia star Lucinda Light broke down in tears in the latest episode after hearing her husband had dated women half his age.
Lucinda called out Timothy for his recent tirade against another couple which kicked off an argument at the latest dinner party.
The 43-year-old told the MAFS cameras: "I've been in a deep space the last week where I've been going, 'what have I signed up for?'
"You know all this explosion, I wanted to crawl into a hole and to be honest I felt a bit sick. People throwing back and forth, are you attracted to your wife, and how about the 23 year olds?"
She later told the relationship experts: "I was humiliated.
Tim, 51, had waded into Jack and Tori's relationship and accused them of being a bad match because they hadn't slept together two weeks into their TV marriage.
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He got into a row with Tori, who screamed across the table "you don't fancy your wife, you dated 23 year olds".
The camera cut to Tim chatting outside the venue, and he said in a piece to camera: "You know, I don't have a stereotypical type.
"If I connect with someone over a period of time, we end up dating."
But viewers praised Lucinda for refusing to back her husband.
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One said "I’m so glad Lucinda is finally thinking of herself and not just being gentle and reassuring and present while Tim figures out who he is."
Lucinda, a wedding celebrant, recently revealed her own "colourful" dating history.
She said she has enjoyed eight serious relationships - but not all with men.
"I've had a pretty colourful relationship background, eight relationships.
"I've been a serial monogamer, you could say. I've dated a woman," she told 9Entertainment.