The supreme happiness of life is the conviction that we are loved.
- Victor Hugo
People all over the world celebrate Valentine's Day. In some countries it is celebrated for hundreds of years, but in some countries it is a new holiday. On February 14 people show their affection by sending special cards (valentines), flowers or chocolates with messages of love.
On Valentine's Day in a leap year (every 4 years) women can propose marriage to their partner.
conviction - убеждение
a leap year - високосный год
propose marriage - сделать предложение
Read about the history of the holiday here (image from http://www.factmonster.com/)