When dragonflies mate, their tails form a love heart.
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'X' became symbolic for a kiss because in the middle ages when alot of people were illiterate and they used to sign documents with an X and then kiss it for sincerity.
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The single biggest predictor of love is proximity.
30
In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
4
In 1999, a fisherman found a love letter in a bottle from a soldier in WWI. He returned said letter to the now deceased widows 86 year old daughter.
27
Erotomania is a type of delusion in which the person believes another person is in love with him/her.
38
Men who kiss their wives in the morning live five years longer than those who don't.
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The left ear is more responsive to words of love and emotion whispered into it than the right.
40