In Korea, if you do not receive any gift on Valentine's day then all the singles go to Korean restaurants and eat black noodles to celebrate (or mourn) their single status.
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It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
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When someone looks at a new love, the neural circuits that are usually associated with social judgment are suppressed.
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Wearing red increases attraction.
30
Historically, sweat has been an active ingredient in perfume and love potions.
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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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'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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In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
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