This Valentine's Day, don't let your checkbook get in the way of your love life. A recent survey from LearnVest, an online provider of financial planning services, found that 68 percent of Americans in relationships say that finances cause more tension with their partner than their sex life does. The New York–based firm polled 1,000 adults online between Dec. 8 and Dec. 13.

In fact, nearly a quarter of the participants said that they have ended a relationship over money. Close to six in 10 said they would rather be single for the rest of their lives than to marry someone with bad financial habits. "From the jobs we take to the way we raise our children, there are so many life decisions that have to be made as a couple — and most will impact your money," said Alexa von Tobel, founder of LearnVest.

Lack of money intimacy

It turns out that couples often know very little about the state of each other's personal finances. Only half of the individuals surveyed know their significant other's investment account balances. Meanwhile, 32 percent don't know how much their partner earns or the amount he or she has in bank accounts.

Make money romantic

Here are five steps you can take to ensure that your cash flow doesn't get in the way of your relationship. 1. Go on a date — to talk about money: "A relaxing Sunday morning is a more ideal time to have a financial conversation than at the end of a long workday when you're lying in bed and exhausted," said von Tobel. 2. Stay casual: Your "finance date" shouldn't be a formal affair. You can have your talk over a glass of wine and some takeout. Just make sure that you're having this chat in a quiet place. 3. Be prepared: Do your homework before you meet up. Bring your credit card and bank statements, student and car loan balances, or a copy of your credit score and relevant reports. "It's important to come to the conversation with full knowledge of your financial picture," said von Tobel.