Woman’s husband secretly cosigned a coworker’s car loan — now they owe $20K. The Ramsey Show says it points to a deeper problem

Although Sharon admitted she initially turned to artificial intelligence (AI) to make sense of this situation, she ultimately decided to contact The Ramsey Show for guidance (1).

At the start of the call, Sharon explained that she and her husband had chosen to keep their finances separate after he ran up credit card debt early in their 12-year marriage. Before that, Sharon says they had been debt-free.

When cohost Ken Coleman asked how much remained on the loan and what the vehicle was worth, Sharon said she still hadn’t gotten the full picture. Her best guess was that roughly US$20,000 remains on the loan, while the car itself may be worth around US$5,000.

Cosigning can create exactly this kind of risk. The Financial Consumer Agency of Canada (FCAC) explains that when you sign a loan as a joint borrower (called cosigning), you become equally responsible for repaying what’s owed — meaning if the principal borrower stops paying, the lender can come after you for the unpaid balance (2).

Sharon told the hosts she loves her husband dearly and “would love to try to recombine” their finances. But she acknowledged that “he’s a bit too much of a nice guy making the wrong decisions.”

Coleman and cohost Jade Warshaw agreed that the issue goes well beyond the numbers. “I can look at these numbers,” Warshaw said, “but I don’t think it’s going to solve the problem here today.”

The steep price of financial infidelity

When it comes to the immediate money problem, Warshaw said the path forward is limited. Sharon and her husband need to get the official loan records, confirm exactly what’s owed and “start stacking up some cash,” because there’s no easy way around paying the shortfall. But the situation highlights two serious financial risks that go beyond this one loan: cosigning debt and financial infidelity.

Cosigning a loan can put enormous pressure on the person who signs. The FCAC makes it clear that when you agree to be a joint borrower, you’re fully responsible for the debt — even if the other party stops paying, and even if you no longer have access to the asset (in this case a vehicle).

Late or missed payments can damage the cosigner’s credit history, and the debt counts toward their debt-to-income ratio, which can make it harder to qualify for future loans or credit. Because your finances are tied to someone else’s habits and behaviour, cosigning creates long-term vulnerabilities that can linger for years.

As risky as cosigning is, the deeper issue in Sharon’s case is about trust.

Financial infidelity happens when one partner hides or lies about important money decisions. That can include secret bank accounts, undisclosed debt or major financial commitments made without prior discussion. Canadian consumer experts warn that keeping secrets around debt and credit can undermine financial stability and strain relationships just as much as the dollar amount owing (3).

Many Canadians agree that financial infidelity is an extreme breach of trust, with 58% of respondents to a Fig survey claiming that lying to a partner about money matters is as bad as cheating (4).

The emotional fallout from financial infidelity can be intense. Financial secrecy often triggers feelings of betrayal, anxiety and loss of security — especially when the hidden decision puts both partners in financial danger. As Warshaw noted during the call, Sharon sounds “like a woman who is almost done.”

While it’s always best to avoid this situation, couples facing financial infidelity aren’t necessarily out of options. Rebuilding trust usually starts with full transparency, clear boundaries around money decisions and, in many cases, outside help — both financial and within the relationship — to prevent repeating the same patterns.

Moving forward after financial infidelity

Recovering from financial infidelity takes honesty and accountability, and it starts with ending the secrecy. That means openly sharing all bank accounts, debts, recurring expenses and financial commitments so both partners are working with the same information.

Once everything is on the table, couples need a way to talk through what happened and why. Those conversations can be uncomfortable, which is why bringing in a neutral third party — such as a marriage counsellor — can help keep discussions focused and productive. As Warshaw explained on The Ramsey Show, the goal is understanding “what caused the split” and “what must be true” for the relationship to move forward.

Rebuilding trust also means creating a shared plan. Setting clear financial goals and building a budget together gives couples a practical way to move ahead. The FCAC recommends budgeting jointly so both partners can track spending, plan for ills and understand what needs to be adjusted.

If credit damage is part of the fallout, working together to catch up on missed payments and avoiding new debt can help stabilize the situation.