EXCLUSIVE: Julianne Hough Reveals How She Knew Fiance Brooks Laich Was 'the One,' Talks Possible 'DWTS' Return

Julianne Hough has met her perfect match in NHL pro Brooks Laich.

ET caught up with the 27-year-old dancer at the SHAPE Body Shop event benefiting the Movemeant Foundation on Saturday in Los Angeles, where she gushed about her handsome fiance.

"I mean, I’ve never really been the person to think about 'when you know you know'. But it was just kinda just that," Hough told ET's Lauren Zima exclusively about how she knew Laich, 32, was "the One." "When we first met each other we were like, 'And we're done.'"

WATCH: Julianne Hough Jokes About Postponing Her Wedding -- 'We Might Get Married in 10 Years, Who Knows?'

The couple started dating in December 2013, and have always been sweetly supportive of one another.

"It's cool because we're in two different professions," Hough explains. "It's fun to be able to learn about the other's profession. I think that’s how we support, like, going to each other's games or performances, and talking about it afterwards. 'What was going on? What was that? What was that move? How come that person didn’t score the goal?' He’ll teach me about it. I don’t know much about his sport but I'm able to learn. ... It's fun. It's really fun."

Of course, with amazing bodies like theirs, they also find time to work out together.

"He has these beach workouts every Monday and Thursday and, like, a bunch of people start joining in," she shares. "And it's so fun because it’s not the way I would personally work out, but it's fun to get different experiences and different ways of working out. It's fun to hang out and push each other and also kind of show him I can keep up with a professional athlete. We’re like-minded. We like the same things, so it's fun."

Hough and Laich got engaged last August, and Hough dishes that she wants to keep their upcoming nuptials simple.

"Oh, just friends and family and no stress," she says. "We just want to have a big ol' dance party and hang out."

Given Hough's the youngest of five siblings, having a big family of her own is likely in the future.

"That's kind of been our mindset for a long time, but one step at a time," she says. "I mean, I’m sure once it actually starts happening I’ll be like, 'Wait, what?!' My sister -- she's in town with her family and she has six kids. So that’s a lot of practice already. We're already thinking about taking a trip to Costco and loading up in bulk. They eat a lot. Kids eat a lot!"

Although, she definitely hopes to instill her own healthy lifestyle into her future children.

"When I have kids one day I want to be in good shape and have a healthy body so that my children are healthy, and I want to be able to teach them how to do those things," she says. "I'm not knocking down my parents, but they didn't really teach us about diet and nutrition and stuff, so I had to figure it out later on in life. I definitely want to be able to teach my kids that."

As for if she'll ever return to Dancing With the Stars, Hough is keeping her options open. She shares that the hit ABC show did in fact ask her to come on as a judge again, but she currently wants to focus on her solo career.

"They are always going to be in my family. It’s where I started," she says about DWTS. “It’s where I came from. If they want me to be a part of it in some aspect, of course. Absolutely. They’ve asked me to come back to judge but we’ll see what happens. Like I said, I’m still focused on my personal journey and my personal career. We’ll see."

The same goes for her brother, six-time DWTS champ Derek Hough.

"He's kind of in that stage of his life too where he’s really focusing on his personal career and journey," she explains. "He’s got a lot of amazing things coming up. We’re still very passionate about our Move brand—which was our big tour that we went on over the last two years. There may be a third one coming soon -- some sort of Move experience. So, we’re definitely focused on that too."

WATCH: Julianne Hough Parties in Cabo With Her Gorgeous Mom and Sisters

Earlier this month, Hough flaunted her insane abs in Los Angeles after a trip to the gym. Watch below:

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