Elizabeth Sobinoff is back on Married at First Sight and has fallen in love with her ‘husband’ Sebastian Guilhaus at first sight too.
But her mother Gillian was suspicious of her daughter’s groom and gave him an intense grilling at the wedding reception.
WATCH: MAFS’ Sebastian gets grilled by Lizzie’s protective mum
Gillian, who had her husband by her side during the inquisition, gave former AFL player-turned-personal trainer Seb a list of what he couldn’t do.
“You can’t cheat, you can’t lie, you can’t keep your feelings inside,” she told him.
“Don’t get angry. Be sweet. No cheating – that’s a big one.”

Seb, who listened attentively and politely, agreed with her.
“You don’t need to worry about that, that’s not in my nature,” he told Lizzie’s parents.
Then, in a piece to camera, he qualified, “What they saw their daughter go through last year would have been extremely difficult so I understood their reservations.”
“You’re not two-faced?” asked Gillian.
“No, I’m exactly how I am,” replied Seb.

Then came a high-seed Q&A.
“Will you back her up?” asked Gillian.
“Yeah, of course,” said Seb.
“Are you loyal?” she fired again.
“Yeah, I’m loyal, I am loyal,” he said, mustering his most genuine smile.
“That’s the biggest thing,” Gillian replied, keeping her poker face on.
“I’ve never cheated on anyone I’ve been getting to know or been close to. Never, ever,” Seb elaborated.
“Ever in my life, ever.
“If I’ve wanted to separate or if it not to continue, I’ve told that person. I haven’t had my cake and ate it too, ever. It’s not in my nature so you don’t need to worry about it.”

“Good to hear,” chimed in Lizzie’s dad, who had been completely silent until this point.
“You’ll just have to see,” said Seb, trying to lighten the mood.
“Yeah, we’ll just have to see,” said Gillian.
Then, continuing to the camera she said, “He seems quite genuine, but I mean I thought the other fella was genuine too. The proof is in the pudding.”
Seb, who seems like a gentleman so far, then told the camera, “I know who I am. I hope I’ve made them feel at ease.”