How is Valentine's Day celebrated in South America?

In Brazil, there is no Valentine's Day. Instead, Dia dos Namorados "Day of the enamored", or "Boyfriend's/Girlfriend's Day") is celebrated on June 12, when couples exchange gifts such as chocolates, cards and usually a flower bouquet. This day is chosen because it is the day before the Saint Anthony's day, known there as the marriage saint, when many single women are searching for a boyfriend or a husband. In Colombia, the D