When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
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Erotomania is a type of delusion in which the person believes another person is in love with him/her.
38
When dragonflies mate, their tails form a love heart.
22
Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
88
Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
14
It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
165
The average person will go on a date at least 100 times before they finally marry.
33
The left ear is more responsive to words of love and emotion whispered into it than the right.
40