Cupid is the son of goddess of love, Venus. According to the myths he is responsible for people falling in love.
Lovers often use the symbol of a heart pierced by an arrow. This symbolizes Cupids arrow. Cupid could cause people to fall in love by piercing them with one of his magic arrows.
The beauty and the fragrance of a rose has made it a very special flower. Roses have been most favored by lovers. The different color of a rose can be used to convey different messages:
We have learnt to associate all kinds of feelings with heart. A person in love often experiences a heavy sensation in the heart… or a feeling of exhalation. So the heart has become to symbolize 'Love'.