"We met on a dating app … It's this app for people that are, like, in the public eye, called Raya."
The former Neighbours star went on to explain that after matching up earlier this year, she and Bellchambers, 30, had realised they were practically neighbours and arranged to get a wine — and "haven't been apart for a day since".
The couple now live together in Melbourne.
"Can I ask you this, did you run into anyone else on the app that we would know?" Fitzy asked her.
"Oh my God, so many people … There were some really big stars," Valance responded cryptically.
While she refused to reveal any of their identities ("I can't!"), she did offer up one big clue — that a very famous "race car driver" was on there.
"Lewis Hamilton!" co-host Sarah McGilvray guessed immediately, prompting a telling silence from Valance.
Anyone hoping to join Raya reportedly needs to meet an extensive list of requirements. They need an invitation from a friend who is an existing member, a creative job, an impressive Instagram following and approval by an actual committee.
It's understood only 8 per cent of the hundreds of thousands who apply are successful — but once they've made it through, if they reveal the identities of anyone else using the app, it's grounds for instant removal.
Matthew Perry, Demi Lovato, Cara Delevingne, Zach Braff, Ruby Rose and Amy Schumer are among the celebrities who are rumoured to have had accounts at some point.
While she was cagey about details, Valance did confirm the process for approval on the app had been exhausting — and "very annoying".