Couples' personalities converge over time to make partners more and more similar.
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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
Rex the German Shepherd was a rescue dog with a bad temper. He refused to be fed by humans and would attack strangers, but he’s a changed dog after falling in love with Geraldine the goose!
10
In medieval Italy, if a man was caught kissing a woman in public, he had to marry her whether he liked it or not.
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A couple had their wedding rings engraved with a waveform of their own voices saying "I do."
10
A Korean man called Lee Jin-gyu fell in love with his large, huggable pillow and married it.
29
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.
88