Two common terms in English letter topics were: "LV" and "FO". - Sad to Come True usually means that a person has experienced some unfortunate things but finally realized what these experiences have taught them to become stronger and more mature. It could also mean that a person had experienced a long period of pain and suffering but was finally released. <strong> For the record </strong></strong> FW could also mean "by the way" or "by the way".