What are the sentences that describe boys silently paying for girls?

It is also a famous sentence. It used to be a story of affection, but now it is often applied to many couples, and it is also a story about boys silently paying for girls. Because this person doesn't eat or drink, he is depressed all day, which is also a more loyal move to love. Some ancient literati also had their own talents. This sentence can also fully reflect how much a boy likes this girl.