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 Korean man called Lee Jin-gyu fell in love with his large, huggable pillow and married it.
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One in five long-term love relationships began with one or both partners being involved with others.
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The single biggest predictor of love is proximity.
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You burn 26 calories in a one minute kiss.
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The left ear is more responsive to words of love and emotion whispered into it than the right.
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In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
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