Shark Tank's Kevin O'Leary Says Married Entrepreneurs Must Do This or Risk DivorceThe key to a lasting union isn't love, passion or sex. Not to the shrewd 'Mr. Wonderful.'

ByKim Lachance Shandrow

Opinions expressed by Entrepreneur contributors are their own.

ABC | Bob D'Amico

Busy entrepreneurs: Treat your marriage like a business or it will fail. So what if it's not the sexiest approach? It's practical and it works, saysShark TankstarKevin O'Leary. (They don't call him "Mr. Wonderful" for nothing, ladies.)

"The number one reason for divorce is not infidelity or falling out of love," the 61-year-old Canadian mutual funds magnate tells狗万官方on the set of the hit reality show. "It's money. It's one partner outspending the other. It's going into debt. It's not respecting the joint finances. If you avoid doing all of that, you're in it for the long haul. If not, forget it."

The shrewd Canadian billionaire tied the knot with his wife,Linda, in 1990, all of a quarter of a century ago. He credits their lasting union with one thing -- and it's not necessarily love, passion or sex. The real reason they're still going strong: They're on the same page about money, and they'd better be. O'Leary's other half is an actively involved executive at their successfulwine company.

Related:9 Signs of Financial Infidelity

Together the pair have two grown children, Savannah, a college student, and Trevor, a music producer, neither of whom will inherit their parents' fortuneby design. They weren't always a perfect or even whole family unit. O'Leary admits that he was largely "an absentee parent" while building his empire, which nearly ended his marriage.

For two years he and his wife lived separately and came extremely close to divorcing each other. "We were at the point of dividing the assets," O'Learytold a Canadian news outletlast year. "But as we neared it, we decided not to do it. We have reunited and kept the family together. I'm glad we did that."

While O'Leary recommitted himself to his wife, his friends left theirs. The author ofCold Hard Truth: On Family, Kids and Money(Doubleday Canada, 2011) says "all" of his friends are divorced and he's learned a lot from watching their marriages crumble.

Related:5 Things to Consider for Entrepreneurs, and Their Spouses, to Have a Healthy Marriage

The worst mistake he says most of his divorced friends made was failing to thoroughly financially vet their partners, just as they would a potential business partner, well before popping the big question. Doing so, whether on your own or with the help of a professional, is something he highly recommends to anyone considering coupling with someone, in sickness and ideally in fiscal health, til death do them part.

Don't stop at running a financial background check on your future husband or wife. Demand a prenuptial agreement, O'Leary furtheradvises. "It forces you [and your betrothed] to tell the truth about your financial past...It'll save you hundreds of thousands of depression and grief and it may save your marriage to find out." A prenup can also make it easier to divide your assets clean in half should you exhaust your options and eventually split, which he thinks you should never do if you have children together.

Related:Great Entrepreneur, Lousy Lover?

"If you have kids, you should absolutely not get a divorce because it's never better the next time," he says. "It's the same thing over and over again, except now you don't have a family any more. It's awful for everyone, especially the children."

Instead, if your goal is to stay together for good, tighten up your collective purse strings, respect the family budget and hang in there through the tough times. "When your marriage hits the rocks -- and they all do -- treat it like the business partnership that it is and you'll pull through. I've seen it happen."

For more straight-up life and financial advice from O'Leary, tune in to theShark TankSeason Seven premiere, airing Friday, Sept. 25, at 9 p.m. ET/PT on your local ABC station.

Related:Reality Check: You Need to Care About More Than Your Business

Kim Lachance Shandrow

Former West Coast Editor

Kim Lachance Shandrow is the former West Coast editor at Entrepreneur.com. Previously, she was a commerce columnist atLos Angeles CityBeat,a news producer at MSNBC and KNBC in Los Angeles and a frequent contributor to theLos Angeles Times. She has also written forGovernment Technologymagazine,LA Yogamagazine, theLowell Sunnewspaper, HealthCentral.com, PsychCentral.com and the former U.S. Surgeon General, Dr. C. Everett Coop. Follow her on Twitter at@Lashandrow. You can also follow her on Facebookhere.

Editor's Pick

Related Topics

领导

We Know Return to Office Mandates Backfire — So Why Are Tech Giants Like Amazon, IBM and Zoom Reinstating This Outdated Policy?

In a landscape where innovation is the ultimate currency, why are tech giants like Amazon, IBM and Zoom clinging to outdated mandates?

Business Ideas

This Retiree's Yummy Hobby Is Now a Remote Side Hustle That Makes $250 an Hour: 'I Attached My Bank Account And the Money Just Flowed Automatically'

Since 1972, in his downtime, Bill Reichman has been dedicated to one delicious diversion. When the pandemic hit, he turned his passion into a lucrative side hustle. Here's how he did it.

Business News

McDonald's Employee Shoots, Kills 30-Year-Old Woman Following Dispute: 'Completely Senseless'

The victim has been identified as Jacklyn Marie Reed from Johnson City, Tennessee.

Marketing

强化你的品牌意识with These Game-Changing PR Tools

If you want a strong brand presence — and therefore more loyal customers — you need to unlock the power of two specific components of a public relations strategy.

Franchise

This CEO Was Running 3 Yogurt Shops at 23, Then Purchased the Company at 27. Now He's Sharing His Secrets.

Discover how one young entrepreneur left the world of finance to revitalize a dessert franchise.

Business News

Costco Shoppers' Personal Data May Have Been Compromised and Sent to Meta, New Lawsuit Alleges

The class-action lawsuit may affect those who have used the online Costco Pharmacy.