Credit: Derek Hough's Instagram Photo: Derek Hough and a Friend in London

Derek Hough sure knows how to live it up when he's not hard at work in the Dancing With the Stars studios.

The DWTS pro took to Instagram yesterday (June 10), showing off a photo of himself and a friend spending some quality time together in London. He wrote, "Out with my best friend in London !!! Good times."

Best friend?! What about our boy Mark Ballas? The world's not big enough for a friendship grander than DerMar. Anywho, we're still glad to see that Derek is kicking back with his mate in England during his off time.

As for what else Derek is doing to relax this summer? He was spotted partying it up with his former DWTS partner, Maria Menounos, for her tequila birthday bash in LA over the weekend. Sounds like a nice break from the ballroom to us!