Kym Johnson and Robert Herjavec compete on the March 16 episode of Dancing With the Stars. Credit: Adam Taylor/ABC via Getty Images

Shark Tank's Robert Herjavec proved that his chemistry with pro Kym Johnson was sizzling hot on the Monday, March 23 episode of Dancing With the Stars, and it's clear that their relationship out of the ballroom is just as hot. "I think they're an adorable couple," DWTS pro Derek Hough told Us Weekly after the pair's flirty foxtrot, which earned them 28 out of 40 points.

Prior to dancing to Michael Buble's "You Make Me Feel So Young," Herjavec, 51, and Johnson, 38, opened up about their relationship in pre-taped rehearsal footage. "I love hanging out with Kym. She's a lot of fun to be with," the Shark Tank star said of his Aussie pro partner. Later, the dad of three — who split from his wife Diana Plese after 24 years of marriage — continued to gush about Johnson.

"From the moment I met [Kym], we got along great. This is a very scary experience for me, and it’s great to have somebody like Kym to go through it with,' he told Us.

Hough — partnered with Olympic gymnast Nastia Liukin — tells Us Herjavec is the perfect match for Johnson. "Literally when Kym describes the kind of man that she’s looking for, it's him!" Hough, 29, said. "She's like, 'I need a guy like this and like this' and I'm like, 'Yo, that's him!' More power to them! I say yay to that."

Indeed, sources tell Us that the couple's chemistry outside the ballroom is just as electric.

"Kym and Robert were definitely attracted to each other from the get-go," an insider told Us earlier this month of the couple, who snuggled and snuck kisses at a recent DWTS viewing party in L.A. "They are constantly all over each other. She can't stop talking about what a good, nice guy he is. They have insane chemistry and are actually a great match."