He's set to face off against Married At First Sight co-star Billy Vincent in the boxing ring on Saturday night. 

But on Friday, Mike Gunner was in boyfriend mode with his girlfriend Jessica Williamson, as they kissed each other on a busy Brisbane street.  

The pair had just touched down in the Queensland capital ahead of the boxing bout with Billy at XCargo beer garden.  

Mike cut a casual figure in pale blue jeans and a white T-shirt, wearing a grey hooded jacket and black slip-on Vans.

Meanwhile, Jessica wore a rust-coloured top tucked into a pair of black skinny jeans with a pair of wedge boots and a loose beanie. 

At one point, the couple cuddled up on the street as Mike closed his eyes to lean in for a smooch on the lips. 

The couple linked hands as the podcast host confidently led the way.

On Friday night, Jessica and Mike headed out for dinner at Cloudland Italian restaurant and bar. 

The model wore a plunging red dress that showed off her ample assets, while Mike also showed a bit of chest with his partially-unbuttoned white shirt.

Mike will face former MAFS co-star Billy in the ring on Saturday. 

Mike and Billy's 'unresolved beef' began when Billy allegedly made comments about Mike on the radio before the fight was announced. 

'Me and Mr Gunner are going to be participating in a celebrity boxing match, raising money for living.org [a men's mental health charity],' Billy said on Instagram. 

'To be brutally honest, if I was to punch somebody in the face from MAFS, it would be Mike.'

While the 43-year-old confessed he didn't have any person issues with Billy, he said the 28-year-old had spoken out against him on radio, which disappointed him.

'There's nothing worse than someone saying something about you, and then you realise it's someone you thought was a friend, it rocks you,' he said.