(Life explanation, very short, but very moving)

A little boy said to a little girl, "Im your BF."

The little girl looked at him and asked: "What is BF?"

The little boy grinned and said, "It means Best Friend."

Later, they fell in love.

The boy said to the girl, "I am your BF."

As she laid her head on his shoulder, the girl asked him shyly: "What is a BF?"

The young man touched the girls face and said affectionately, "It means Boy Friend."
…………………………………………………………
A few years later, they married and had a lovely child.

The husband smiled and said to his wife, "I am your BF."

The wife removed her apron and asked gently, "What is a BF?"

The husband looked at the baby and said happily, "It means the Babys Father."
…………………………………………………………………………..
Years later, they got too old to walk.

The old couple lay in their wicker chairs, basking leisurely in the evening sun.

The old man said to the old woman, "Old woman, I am your BF."

The old woman smiled and asked: "Old man, what is a BF."

The old man looked at the sunset, then up into the sky. He said firmly and mysteriously, "Be Forever."

The original Chinese is from https://blog.xuite.net/hui0937597001/336699/76450837.

什麼是 BF？
(一生解釋，很短，卻很動人)
一個小男孩對小女 孩說：“我是妳的 BF。”
小女孩仰起童真的臉，問：“什麼是 BF?”
小男孩嘻嘻笑笑的說：“就是 best friend 的意思。”(最好的朋友)

後來，他們戀愛了。
小夥子對姑娘說：“我是妳的 BF.”
姑娘小鳥依人，害羞的問道：“什麼 是 BF？”
小夥子捧起姑娘的臉，深情的說： “是 boy friend的意思。”(男朋友)
很幸運，幾年後，他們結婚了，有了 可愛的孩子。
丈夫微笑的對妻子說：“我是妳的 BF.”
妻子接下圍裙，溫柔地問道：“什麼 是 BF。”
丈夫看了看寶貝，滿臉幸福的說： “就是 babys father 的意思。”(孩子的父親)

後來他們老了，老的走不動了，
老兩口躺在籐椅上，悠閒地曬著傍晚 的太陽。
老公公對老婆婆說：“老婆子，我是 妳的 BF。”
老婆婆笑得滿臉皺紋，問道：“老頭 子，什麼是BF。”
老頭子望望夕陽，然後仰望天空，
思緒連篇，蒼老的聲音卻堅定而神秘 的說：“Be forever。”(是永遠的)

原文来自https://blog.xuite.net/hui0937597001/336699/76450837.