二战时期，美国军人被派往海外开辟新的战场，时间一长，军嫂们就不愿再等待。这些军人的妻子和女友通常都是以充满爱意的称谓，Dear John开头，实则是一封残酷的分手信；绝交信。

【例句】
He received a dear John letter from his girlfriend yesterday.
他昨天收到了女朋友的分手信。

I received a dear John letter from my girl friend which broke my heart.
我收到女友来的绝交信，令我伤心欲绝。