And he suggests you do the same.
"When ... you're starting out, the worst thing you can do is put yourself in debt for your wedding," O'Leary says. "I know it sounds romantic to spend a lot of money — it's crazy to do that."
An average wedding will cost you $35,329, according to a 2016 survey of nearly 13,000 couples by industry site The Knot. The most costly expenses were reserving a venue, hiring a photographer and an event planner, and booking a band.
To put it in perspective, that same $35,329 could also buy a Model 3 Tesla, a tiny home or even four tickets on the 50-yard line at the Super Bowl in 2017, according to The Washington Post.
Even better, says O'Leary, take what you save and invest it for the long term.
"Forget about spending a fortune, you don't need a white dress for $22,000," O'Leary says. "Save your money, invest it and later you can take everybody out for a great time on the interest you're making off your bonds and the dividends your stocks are paying."
Unlike buying champagne, using money to harness the power of compounding returns will help grow your wealth for years to come.
"The whole idea is to remember you're building for your future. Don't get into debt, save, save save and invest," he suggests. "It's a fantastic way to protect yourself down the road."
—Video by Luqman Adeniyi
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