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.
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Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
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When dragonflies mate, their tails form a love heart.
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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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The average person will go on a date at least 100 times before they finally marry.
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The single biggest predictor of love is proximity.
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Men who kiss their wives in the morning live five years longer than those who don't.
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