Short Story: A Small Price to Pay by Carlos Salinas

A young boy always bought his friend things: food, candy, drinks, and more things. He eventually started to realize how much he gave and how little, if any, he got back. And it wasn’t that the other couldn’t give anything, as everyone can give something. This bothered him so much that he finally brought it up with his grandfather.
“Grandpa, what do you do when you give and give and give and the person doesn’t do anything for you?”
In his wisdom the grandfather sat there in thought for a few seconds. “How much do you think you have spent on this person?”
“Not much, really.”
“Then consider it a small price to pay to discover what kind of person they really are.”