DWTS' pros and longtime BFFs Derek Hough and Mark Ballas teamed up with a same-sex tango in the Season 33 finale.

"Dancing with the Stars" pro Mark Ballas said he’s grateful for Derek Hough and others who “really have my back.”

Mark Ballas revealed that he turned to Derek Hough for support after his wife, BC Jean, experienced a miscarriage.

And we've been there for each other through each other's ups and downs." Life didn't stop happening to Mark Ballas during his years on Dancing with the Stars — luckily, he had a good friend to help him through the tough times.

Pro dancer for Dancing With the Stars, Mark Ballas, says he leaned on former-pro-turned-judge Derek Hough when his wife had a miscarriage while he was competing on the hit ABC dancing competition show.