A Dear John letter is a letter written to a husband or boyfriend 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 man in person. 所谓DearJohnletter是指一个女子写给丈夫或男友表示分手的信件,通常是在写信人另有所爱的情况下所写,且往往写信人不能够或不想要当面告知男方这一情况。