Joe Sugg, 27, and his Strictly Come Dancing professional partner Dianne Buswell, 29, have been improving each week on the show.
Last weekend, the pair scored 38 out of 40 for their phenomenal Quickstep at Blackpool.
And appearing on It Takes Two night, Dianne admitted to host Zoe Ball she has been “pushing” the vlogger to achieve the best of his ability, to Joe’s dismay.
“I feel like I push Joe harder and harder every week, but he can take it,” the Australian dance revealed.
Just don’t break me
“He’s improved so much from that boy that walked in the first day when I thought ‘oh gosh what am I gonna do with you’.”
Singing his praises, she continued: “What he’s achieved is incredible.
“I just feel I have to push him, he has so much potential so I push him as hard as I can.”
Warning Dianne, Joe appeared a little concerned as he joked: “Just don’t break me!”
On Saturday night, Joe and Dianne will be performing a Street and Commercial dance from their Couple’s Choice category.
The two will be dancing their routine to song Jump Around by House of Pain.
Joe Sugg: The Strictly star issued a warning to Dianne Buswell (Image: BBC)
Spilling all about their dance, Dianne said: “There’s a lot of jumping around.”
“Lots of props, lots of movements,” added Joe.
Laughing, Dianne said: “Lots of things that could go wrong!
“So it’s a basketball theme, I’ve never played basketball in my life!”
Earlier this week, Joe revealed he suffered a major setback in rehearsals after falling ill.
Joe Sugg: The YouTube star told Dianne Buswell not to “break him” (Image: BBC)
Joe Sugg: Dianne Buswell and Joe received 38 points for their Blackpool routine (Image: BBC)
Taking to his Instagram on Monday, the YouTube sensation told his army of fans he was struck down with the bug which affected his training.
Joe explained to his 5.7 million followers: “I didn’t post anything yesterday because I got a stomach bug, a 24 hour vomiting bug.
“Hence why I have got this dirty little moustache still,” he said before showing off his facial hair. “I haven’t shaved it off!”
Looking forward to this week of rehearsals, he added: “Feeling better today and now I’m ready to Lindy Hop and Street Dance and Commercial.”
Strictly Come Dancing 2018 continues Saturday on BBC One at 6.45pm.