Heather Dubrow Reveals Secret to Successful Marriage and Spills on Newest Addition to O.C. Mansion

Heather Dubrow and husband Terry Dubrow have been happily married for almost 20 years. So what's their secret?

"Separate bathrooms," Heather quipped during a recent interview with TooFab. "There's some things that should remain a mystery. I don't know why everyone feels they have to share everything. Boundaries."

The former "Real Housewives of Orange County" star had us in stitches with her hilariously spot-on relationship advice, but don't be fooled -- it's the Dubrows who are having the last laugh. After surviving five years of reality television, they can now say with confidence they've also made it out of co-authoring a book alive.

"The Dubrow Diet: Interval Eating to Lose Weight and Feel Ageless" -- which the couple published in October of 2018 -- quickly became a best-seller and one of the top-googled wellness books of the year.

"Terry and I have our separate businesses, and then we do things together," Heather told us. "This book was so organic because we had just started eating like this three or four years ago. We didn't actually intend to write it down."

Simply put, the concept of interval eating divides your day into times when you eat and times when you don't. According to Heather, limiting the hours you eat each day not only helps you consume fewer calories, but it also uses the time when your body is not consuming food to turn over fat cells and use them as fuel.

"When you think about fasting, it sounds like tired, skinny people," she joked, explaining that people who follow interval eating "actually get younger from the inside out."

"You feel better, you get more energy, your skin gets tighter, your hair gets thicker, you feel younger," she said. "The anti-aging properties are incredible." And the Dubrows are proof! Heather just turned 50, and her "Botched" star husband is 60.

Heather told us she and Terry "work pretty well together," which is a relief considering they have a skincare line, a podcast and possibly another book on their hands.

"Some couples hike and have hobbies; we're workers!" she joked. "We do a podcast together, which is fun because it's our L.A. day. So he does his stuff, I do my stuff, and then we do a podcast together, and then we go out for dinner. Writing books is super fun together, but of course, everyone says, 'What's the next book?' So we've been talking about doing a book about relationships, but we're worried."

"We managed to avoid the reality TV curse, but is it too on the nose to write a book about your relationship? Is that the kiss of death?!" Heather asked rhetorically, noting they have "not put pen to paper."

But if this potential future book echoes even a fraction of the things Heather told us during our sit-down, sign us up.

"You have to know how to fight. You have to know how to make up. You have to know when to let things go because, sometimes, keeping peace is more important than being right," she said. "And you have to have date night! You have to have sex. It's very hard when your children are little and you're kind of living in diapers and feces and you're exhausted, but you have to do it. You gotta just make it happen because it's very easy to get disconnected."

Since we had Heather in studio, we just had to ask if she had made any new additions to her spectacular Orange County mansion. "Well, yes," she said reluctantly, "but it's not done yet. It's having some issues."

"You know how I have that wall of champagne?" she continued. "So it's in the dining room, and I designed this -- I guess I could just call it champagne jewelry -- that sparkles in between the rows of bottles. But it's been a little trying. It hasn't really been finished yet. I could leave it alone right now, but I'm not going to. It's gotta be right."

Totally relatable, right?!

See what she had to say about her recent social media feud with Kelly Dodd in the video below.

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