Historically, sweat has been an active ingredient in perfume and love potions.
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Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
14
Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
104
One in five long-term love relationships began with one or both partners being involved with others.
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There's a love mattress that is specifically designed for couples who sleep on each other's arms.
12
In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
4
8 out of 10 people think that the first kiss indicates how the rest of the relationship will be.
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It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
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