Dear John letter
Overview
A "Dear John letter" is a letter written to a husband
Husband
A husband is a male participant in a marriage. The rights and obligations of the husband regarding his spouse and others, and his status in the community and in law, vary between cultures and has varied over time...

 or boyfriend
Boyfriend
A boyfriend is a person's regular male companion in a romantic or sexual relationship, although normally not in long-term committed relationships, where other titles A boyfriend is a person's regular male companion in a romantic or sexual relationship, although normally not in long-term committed...

 by his wife
Wife
A wife is a female partner in a marriage. The rights and obligations of the wife regarding her spouse and others, and her status in the community and in law, varies between cultures and has varied over time.-Origin and etymology:...

 or girlfriend
Girlfriend
Girlfriend is a term that can refer to either a female partner in a non-marital romantic relationship or a female non-romantic friend that is closer than other friends....

 to inform him their relationship is over, usually because the author has found another lover. Dear John Letters are often written out of an inability or unwillingness to inform the person face to face. The reverse situation, in which someone writes to his wife
Wife
A wife is a female partner in a marriage. The rights and obligations of the wife regarding her spouse and others, and her status in the community and in law, varies between cultures and has varied over time.-Origin and etymology:...

 or girlfriend
Girlfriend
Girlfriend is a term that can refer to either a female partner in a non-marital romantic relationship or a female non-romantic friend that is closer than other friends....

 to break off the relationship, is referred to as a "Dear Jane letter."

While the exact origins of the phrase are unknown, it is commonly believed to have been coined by Americans during World War II
World War II
World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

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