Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
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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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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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Raj from the Big Bang Theory is married to Miss India.
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The average person in their lifetime will spend an estimated 20,160 minutes kissing!
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Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
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Parents receive 1 out of every 5 Valentines.
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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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