Chmerkovskiy, 31, and Johnson, 23, showed off their chemistry while teaching at Dancerpalooza dance festival Wednesday in Long Beach, Calif.
Johnson re-posted a video from Dancerpalooza that shows her and Chmerkovskiy leading a group of students in a choreographed dance. She and Chmerkovskiy were all smiles as they cozied up during the routine.
"Today's class with @iamvalc at @dancerpalooza #TeamPlayback," Johnson captioned the clip. "The talent was incredible!!"
"Had a blast teaching these incredible minds at @dancerpalooza today for #TeamPlayBack," Chmerkovskiy added on his own account.
The Dancing with the Stars pros shared another sweet moment this week while Johnson was feeling under the weather. The dancer posted a photo Sunday of herself snuggling Chmerkovskiy on a bench.
"Because he takes care of me when I'm sicker than a dog," she wrote.
"I love to love," Chmerkovskiy told Entertainment Tonight in December 2015. "I just have to find somebody to love."