The problem is that a "female" classmate borrows money from you "frequently", and this has happened many times without your wife knowing it.

1. You should understand why this female classmate always asks you for money, and why she always thinks of you when she needs money.

2. How much money did she borrow from you every time? Did she pay you back in time? Did she pay it off? As the saying goes, it is not difficult to borrow again if you borrow and pay back.

You can't stand the fact that she borrowed money from you, so don't borrow money from her again. You'd better explain the whole story to your wife so as not to worry.