Dia dos namorados

The date was introduced in Japan in 1936, by a candy factory that imported the idea of the United States. In Japan, it is only the women who give presents (mainly chocolates) to men. Japanese women are usually too shy to express their love. Therefore, Valentine's Day was thought to be a great opportunity to let women express their feelings. Men are supposed to return gifts to women on a day called "White Day" (March 14th), a Japanese creation.
Women give chocolates not only to their loved ones . They might be "Giri-choko, is the chocolate of Living Social, offered to the known, coworkers, customers, as a form of gratitude. The concept of "giri" is a mutual obligation that the Japanese follow when dealing with other people. If someone does you a favor, then you feel obligated to do something for that person. The Honmei Choco is the Chocolate of True Intent, offered to the person you're in love. If they still are not together is a way to declare your love to the person. The Family Choco is the Chocolate Family, is offered to her husband and children.
In the 1980s the Japanese National Confectionery Industry Association launched a successful campaign to make March 14 a "reply day", where men are expected to return the favour to those who gave them chocolates on Valentine's Day, calling it White Day for the color of the chocolates being offered. A previous failed attempt to popularize this celebration had been done by a marshmallow manufacturer who wanted men to return marshmallows to women.
In USA, they celebrated the Valentine’s day by the belief in the history of Valentine. The Bishop Valentine fought against the orders of Emperor Claudius II who had prohibited marriage during the war believing that single men were better fighters. In addition to continuing celebrating marriages, he married secretly, despite the ban of the emperor. The practice was discovered, and Valentine was arrested and sentenced to death. While imprisoned, many young people sent him