When it comes to money, it’s a big concern for me, when a SO is being underhanded. I’ve had to deal with some things and may be very sensitive to the issue.

Have you done a credit check? You can do a free credit check with Equifax, Transunion, and one other company I forget the name.

If I were in your situation, I would do the credit report for myself and convince my h to do it for himself and show it to me. If he refuses, it’s a huge red flag because he may be hiding something...and that’s the reason I’d want to do the report, though I would tell him it’s to make sure everything is correct, which is a good reason to do the check tbh.

If he’s maxed out credit cards, or if he’s opened new ones you don’t know about, this will tell you.

To me, his using your cc, possibly goes beyond his just using yours for the $300. Could he have done worse you don’t know about?

I don’t think you would be unreasonably untrusting to do that after what he’s been doing.

Just my two cents.