Roses
Rose has been a symbol for love since ancient days. There is an interesting story about the creation of rose in Greek mythology: Chloris, the Goddess of flowers created rose by giving life to lifeless body of a nymph; Aphrodite, the Goddess of love gave her beauty and Dionysus, the God of wine presented her nectar to give her sweet scent; the three Graces gave her charm, brightness and joy. This is the reason for its popularity among lovers.
Of all roses red rose is the ultimate symbol of love filled with romance and passion that signifies “I love you” and lilac rose signifies love at first sight. According to some traditions one red rose stands for "an only love", eleven roses stand for "a favorite", ninety nine roses mean " forever love" and hundred roses mean " marry me".
Heart
In early science and philosophy heart is considered as seat for thought and reason. Heart is at the center of one's existence and it stands for the deepest of human emotions, particularly love. To give heart is considered as giving his or her whole being. Hence heart symbol became popular among Valentine's Day symbols.
Cupid
According to Greek mythology, Cupid, the son of Goddess of Love is responsible for people falling in love. Being hit by his arrows makes a person to fall in love with the first person he or she sees. Hence today the heart pierced by the cupid's arrow has become most famous of the Valentine's Day symbols.
Love knots
In ancient days knights used to wear love tokens that were tied by their ladies when they go into battle. The wearing of this tokens is gradually became a tradition and now is considered as valentine's symbol. There is another interesting significance behind this. Muslim girls in traditional Arabian families used to send their messages of love to their beloved men woven through the knots of a carpet and gradually this became the concept of valentine's symbols.
Love birds
Birds have long been regarded as love symbols. In ancient times, pairs of small parrots were called love birds and they signify fidelity as these birds mate for life. Many people all over the world believed that birds found their mates on this day. Now, little blue colored birds signify this belief and became the symbol for love.
Doves
Doves are symbolic to their innocence, purity. For thousands of years doves are considered as the symbol of love, peace and divinity. According to Greek mythology the chariot of Aphrodite, the Goddess of Love is drawn by doves. Aphrodite's daughters, the Pleiades "the Seven Sisters in the night sky" were also known in Greece as "a flock of doves." According to Aztec mythology, the Goddess of love, Xochiquetzal had descended on humankind in the form of a dove to create the languages of the world. According to Holy Bible dove is the symbol of Holy Spirit. For all these reasons dove became one of the famous love symbols.
Diamond ring
Ancient Romans considered the ring as love symbol for the unbroken circle symbolizes eternity. In another story, it is said that cupid's arrows are tipped with diamonds. Gradually giving a diamond ring became a promise that they will soon become husband and wife. Presenting a diamond ring gives an eternal sense of love; it is a promise to someone and symbolizes fidelity.
Chocolates
In ancient days, chocolates are considered a gift from God as they are associated with spiritual wisdom and sexual powers. Aztecs believed that chocolates are associated with the Goddess of love and fertility, Xochiquetzal. Chocolate works like energy booster as the chocolate consumption releases a chemical into the body very similar to what is produced when you are in love. That's why chocolates are so popular among lovers.