Married At First Sight stars Mike Gunner and Billy Vincent have taken each other on in the boxing ring.
The reality-TV stars participated in a charity boxing match in Brisbane with all proceeds going toward LIVIN, a charity that aims to 'break the stigma of mental health'.
WATCH: Mike Gunner loses to Billy Vincent in boxing match
Gunner looked to be struggling as Vincent hit him with a few brutal jabs, including one square in the jaw.
As the match came to an end, Mike looked visibly out of breath and was unable to keep up with Billy.
Vincent went on to receive the $11,000 cheque for the charity.
'Whatever happens tomorrow, my head will be held high. I've dropped 8kg and picked up a mean right hand,' Billy wrote on his Instagram page.
Mike also took to his Instagram story, writing: 'We're just having fun, it'll be a fun weekend. It's for a good cause, that's all that matters.'