The girl looked at the boy with bitterness. Why?

Because this kid is stupid! The sad eyes show that she has tried her best to express her meaning, but the boy hasn't understood it yet and hasn't reacted yet!

Besides, it's no use asking her directly, she will be more disgusted. I didn't tell you directly because I was embarrassed, so I chose a euphemistic way to express it.

Therefore, boys had better ponder over her words again. If they can't figure it out, ask her girlfriends!