Wife of Brian: To'o celebrates premiership by popping the question

Panthers winger Brian To'o has capped a premiership-winning performance by proposing to his partner Moesha Crichton-Ropati moments after the full-time siren in Sunday's grand final at Suncorp Stadium.

To'o, who was at his metre-eating best with 238 metres in the gripping 14-12 win, walked over to the sideline and got down on one knee for the heart-warming celebration.

They received a rousing roar from the nearby fans when Moesha said yes, adding a very different flavour to Penrith's post-game celebrations.

"First of all, I want to give all the glory to God, what a year it's been for not only myself but for my community as well," To'o told Channel Nine.

"I want to thank my beautiful partner for saying yes and also for the boys for getting us the win. I'm just grateful to be here and so lucky. 

"I'm really speechless, not only because of the year I've had with Origin but also now to finish the year with a ring.

"It's a special moment to have with not only my partner but my family in lockdown as well. I'm really happy."

Moesha said she had no idea To'o would get down on one knee and ask for her hand in marriage.

Moesha, who moved to Queensland with To'o following the Origin series as part of Penrith's family entourage, was just as humble about her partner's achievements.

"I thought he was coming over to give me a hug like he usually does, I wasn't expecting that, not at all," she said. 

"I'm really close with my parents and it was 50-50 to come up here. I wanted to be with Brian but also wanted to be with my parents at the same time.

"I thank God, if it wasn't for him, none of this would've happened. Being here with each other made it even better."