How to navigate finances when a spouse has a gambling addiction

Q: My husband and I have always shared the same financial goals, whether it involved lifestyle choices or retirement planning. However, about a year ago, I discovered money missing from our accounts. When I confronted him, he admitted to online gambling and needing the funds to pay off his debts. Recently, he approached me to sign documents for a home equity line of credit (HELOC) to cover new debts. I refused because he had promised to stop gambling a year ago. Now, I am unsure of what other fi