Almost thirty percent of adults have admitted they have committed financial infidelity. However, experts say it's not just about how much people are making or spending. They say this time of year it's common for people to lie about how much debt they're in as well.

That worries experts because summer is the height of wedding season.

If someone plans to get married soon or has recently said, "I do." those experts say it's time to have a very honest conversation about the state of the couple's finances and their current financial obligations.

"Number one advice that I share is to develop and start a communication process that's going to allow you to build a foundation, develop trust and develop a values and budgets system from that place," Senior Vice President of the Consumer Division at Key Bank in Colorado, told 9NEWS.

He added that it's important for couples to start this process early because it can keep people from unknowingly walking into a financial nightmare.

"I have heard and seen many frankly nightmarish scenarios. From couples getting married and not knowing the one of the partners was close to filing bankruptcy. I mean that's kind of a worst case scenario," Hollis said. "But frankly I think you could even shrink it down if you will to a couple not being completely aware of the income levels that one of the partners is driving. And maybe one of the partners is living outside their means and spending far beyond what their income should allow."

That's why Hollis says communication is so important. However, he says there are some misnomers about marrying someone with bad credit.

"I think it's important to note that just because you marry an individual with poor credit does not necessarily mean you have poor credit. Therein is an opportunity to help rebuild that credit. You are not automatically assuming all of their individual credit debt," said Hollis.

For couples who have questions Hollis says they shouldn't be afraid to get professional help from a financial advisor or banker. He told 9NEWS couples don't need to have a lot of money in order to get help figuring out how to best manage it.

"One of the myths that many Americans have is that you need to have a half a million dollars to work with a financial advisor or a financial professional or a banker. I would encourage all Americans, but especially newer couples who are recently married to develop a relationship with a banker," Hollis said. "If you are in the process of establishing your first retirement plan or if you have a new children and you're setting up a 529 college savings plan I think it's extremely important to establish that relationship early. Again if that means you have $5,000 to invest start that relationship and start to develop the strategy and the plan on how the couple will be financially successful."

For more tips on marriage and money please watch the video above.

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