One in five long-term love relationships began with one or both partners being involved with others.
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The average person will go on a date at least 100 times before they finally marry.
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Kissing an infection-free partner is good for your teeth!
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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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The single biggest predictor of love is proximity.
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Men fall in love faster than women do.
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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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When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
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