Dancing with his sister.

Derek Hough had the best reaction to his sister Julianne Hough flirt with Danny Amendola during the Dancing with the stars season 33 finale November 26.

Following Danny Barbie-inspired freestyle dance with partner Whitney Carsonthe duo lay on a bed chatting with Julianne. When the cohost asked Danny, “What’s it like dancing as Ken?” he replied, “I think the real question, Julianne, is why are you in my bed?”

While Whitney simply looked away and said, “Oh,” Julianne said, laughing cheekily back to Danny, “Oh, is that an invite? Let’s get your scores!”

The show then moved to the judging panel where Carrie Ann Inaba she gave a 9 when Danny and Julianne took each other’s hands. The score reveal was then delayed when Derek raised a hand in confusion and playfully asked, “What’s happening?!”

His fellow judges then reminded him that he had to share his score before showing a 10 and, with reference to Ryan Gosling‘s role in the blockbuster, declared “You are Kenough!”