'Thank you to Queensland and the fans, this one is for you guys.'
Munster, who has soared into the limelight since claiming the title, was captured on the broadcast jumping onto Maroons trainer Allan Langer's back and riding him like a horse in the dressing rooms after the win.
Munster spent time near Ms McMahon's family last year while in the NRL's quarantine bubble on the Sunshine Coast.
Ms McMahon shared a close relationship with her mother Maria (pictured together last year, who she described as her 'rock'
'Luckily enough for me my partner’s mum and dad live down the road,' he said last October.