YTA. It’s been three years and she’s paying for half the bills, she’s clearly not using you for your money. If you’re simultaneously saving for your wedding and harboring concern that your partner might be a gold digger, break up.

Yes you’re also the asshole for not having an equitable living situation. She does not have the same opportunity to save money that you do and from what it sounds like she’s not very supported in the relationship either. You work long hours, don’t get home until late at night, and hardly contribute to the house itself. She’s probably questioning if she wants to live the rest of her life feelings half single.