Valentine's Day cards are used for so many types of relationships that there is not one sentiment that fits them all. Cards should be tailored to match the connection between the sender and receiver. With a spouse or significant other, heartfelt words of love and affection are appropriate. The message does not need to be poetry, but it should be sincere.
In other cases, the wording needs to be different. People often send Valentine's Day cards to co-workers. These messages should be friendly and office-appropriate. Funny cards are acceptable as long as the recipient shares the same sense of humor. Cards sometimes get passed around, so they should not be intimate.
Family members, such as parents, children and grandparents, also appreciate Valentine's Day cards. These cards should show love in a personal way, such as something unique that the recipient and sender have shared.
Sometimes a person chooses Valentine's Day to express interest in someone new. The card should be light-hearted, non-threatening and easygoing. A simple, friendly wish is appropriate. It is not suitable to express a hidden desire or deep emotion.
According to the Greeting Card Association, about 190 million Valentine's Day cards are sent annually, in addition to the cards shared at schools. Hallmark began producing these holiday cards in 1913.