Monday's episode of Married At First Sight saw Jason Engler ask his 'wife' Alana Lister if she was planning on taking her vibrator on the show's couples retreat.

Sitting in their apartment, Alana, 30, called out to Jason to get their phone chargers, before he emerged from their bedroom with a vibrator.

'You've got a sex toy attached to it. The enemy,' Jason, 35, told her, revealing his nickname for the X-rated device. 

Alana later confessed that 'Jason is feuding with my vibrator' and admitted in no uncertain terms: 'He hates it.'

'I mean, it's hard. If I had to choose... I'd choose... Jason?' she said unconvincingly, before weighing up her options with her hands.

As they zipped up their suitcase, Alana straddled the jam-packed bag while Jason closed it.

Something inside the suitcase then began to vibrate, leaving them confused at first, before they realised what it was.  

Giggling, Alana continued to sit on the suitcase as a frustrated Jason ordered her to get up.

'I just hate it. I'm going to throw it out. It's not coming with us,' he said.

Talking to Alana, he added: 'I thought I'd take care of that. Why do you have to bring that for? It's the enemy.' 

After arriving at the couples retreat, a frisky Alana made fast work of getting Jason into bed.

Straddling him on top of the mattress, she proceeded to unzip his pants as he bashfully protested.

'Alright, are we ready? Let's just do it! Let's christen the room,' she told a red-faced Jason.

He then lifted Alana off his lap, before standing up and zipping his pants back up, telling her to 'stop it'.

'I don't know how Alana and I did this, but I feel like we got an amazing room. At this very point in time we're the best we've ever been,' he later said.