It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
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Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
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You burn 26 calories in a one minute kiss.
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When dragonflies mate, their tails form a love heart.
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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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Studies show that the risk of a “secret love” being revealed heightens romantic feelings for the partners, thanks to increased levels of phenylethylamine (PEA).
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Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
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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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