Originally Posted by Eujeanie

Should we be worried? As luck would have it, we didn't really think through who would get the Aspire, and who would get the Surpass. Since the Surpass has the bonus on supermarkets, I use it all the time, even though it's my husband's card and I'm the AU. And conversely, I got the Aspire with the higher restaurant bonus, and he picks up all the restaurant checks even though he's the AU. I don't think Amex would really care, but now a thread like this has me wondering. And of course we are charging up a fraction, a minute fraction, of what this OP has been doing.