It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
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Erotomania is a type of delusion in which the person believes another person is in love with him/her.
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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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Gary Kremen, founder of match.com, lost his girlfriend to a man she met on match.com.
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8 out of 10 people think that the first kiss indicates how the rest of the relationship will be.
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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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