When I was a kid, I once asked my brother this question:
"Brother, do you understand love?"
At that time, my brother was sitting on the sofa, chewing bubble gum and watching cartoons. Hearing this, he turned around and glared at me:
"Why are you asking? By the way, have you finished the popcorn that dad bought you yesterday?"
"Not... Not yet." I was stunned and hurried back.
"Then bring me some, I haven't eaten a bite."
"Oh, okay." I ran all the way to get it.
So, this issue was shelved.
Years later, when my brother was entangled with several men, I asked him this question again:
"Brother, do you understand love?"
My brother was smoking one cigarette after another. When he heard me ask, he smiled to himself:
"... I would rather not understand."