The pair have made light at frequent reports in the media that they are dating, after Dianne split from soap star boyfriend Anthony Quinlan earlier this month.
Joe and Dianne appeared together in one of the YouTube star’s vlogs, in which they reacted to their Halloween performance.
He commented wryly: “Dianne’s round my house I can’t believe it. That can only mean one thing. Dianne’s round my house filming a video – must mean we’re going out with each other.”
She added: “Oh my God! Call the cops. It must mean that. Hello boyfriend.”
After rumours of a romance between them first surfaced last week, his representative insisted his relationship with Dianne is strictly professional, saying the claims were “absolutely not true”.
It was confirmed Dianne and ‘Emmerdale’ star Anthony had gone their separate ways after just under a year together earlier this month, with the pair’s busy schedules cited as the reason for the break-up.
Opening up about their split in a recent interview, Anthony told The Sun: “The long-distance thing was quite taxing for us both.
“But we are still good friends, you know. And like I said, these things happen day to day. The fact of the matter is, relationships don’t always work.”
Dianne joined ‘Strictly’ in 2017, but had a short-lived time in the competition for her first year, after she was partnered with Reverend Richard Coles.
This weekend, Joe and Dianne will be dancing the Paso Doble to ‘Pompeii’ by Bastille, after scoring 35 points for their Foxtrot to 5 Seconds Of Summer’s ‘Youngblood’ last week.
‘Strictly Come Dancing’ continues on Saturday at 7.05pm on BBC One.