"I started dancing because I wanted to be around girls," the Dancing with the Stars pro tells PEOPLE

By Michele Corriston
Updated April 13, 2015 04:40 PM
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Credit: Christopher Polk/NBC/Getty

We know Julianne Hough‘s Lip Sync Battle moves “straight-up traumatized” her big brother, but was it ever awkward for the Dancing with the Stars pros to groove together?

“It’s been weird in the past,” Derek Hough admitted to PEOPLE. “I started dancing because I wanted to be around girls. My parents were like, ‘Why don’t you dance with your sister?’ I was like, ‘No, you’re defeating the entire purpose of why I’m dancing!’ ”

But now, Derek, 29, and DWTS judge Julianne, 26, are happy they’ve found fame with a sibling by their side – they even went on tour together last summer.

“Now, when we dance together, it’s got a fun energy about it,” Derek explained.

On sale now: PEOPLE’s 10 Years of Dancing with the Stars Collector’s Edition, available in stores here and for digital download here