Married At First Sight bride Alana Lister has made no secret of her love of sex. 

And things appeared to come to a head on Sunday's commitment ceremony after her groom Jason Engler admitted he couldn't keep up with her in the bedroom. 

Twitter erupted with viewers seeing the funnier side of the confession from the couple who were open on the couch. 

'I mean Jason's performance has been really impressive. Maybe give him a break and a berocca,' one fan wrote, jokingly. 

Another added: 'I don't [think] Alana has given Jason any chance to be affectionate or initiate anything she jumps on him and expects sex.' 

Yet another wrote: 'Alana has literally f**ked the life out of him.' 

Despite Alana and Jason having a strong start, it appears the pair have fallen into a rut in their relationship. 

Alana admitted she is sick of having to be the one to initiate touching and the pair being affectionate with each other. 

'I feel like I'm...I'm so, like, tired of... I'm always being like kiss me. I'm tired of being person that's doing it all the time,' Alana admitted. 

Jason replied: 'Here's the thing with Alana. She has... How do I put this? ..a greater sex drive than me than I do.'

Alana seemed to be calm as Jason was on the verge of tears. He was eventually asked to say how he feels by the experts. 

'It's still like my feelings...Yeah, they're not growing,' he said, amid long pauses.

'Seeing all these guys, the new couples, they are all lovey-dovey and that. 

'And it's just kind of like... are we over that honeymoon stage already?' 

Alana wrote 'Stay' at the commitment ceremony. 

Jason also opted to 'stay' and work out the couple's communication problems.   

'I don't know how we would get this spark back or turn things around. But... I'm staying as well for now,' Jason said. 

Married At First Sight continues Monday at 7.30pm on Channel Nine