My girlfriend says she is the worst at math. You should reply to her and say that it is not bad to be poor at math. Poor math is just that she is not good at calculating others and heartless, which is good. Moreover, it is a virtue that a woman has no talent, and it is also a blessing not to know too much. Besides, you are poor at math and I am good at math. Let me think about all the complicated things. You just need to be responsible for simply enjoying yourself. I think the average girl will be very happy when you say this, unless she says this sentence has other connotations, which is hard to say.