Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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As a rule, 66 percent of people keep their eyes closed while kissing. The rest take pleasure in watching the emotions run the gamut on the faces of their partners.
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In Korea, there's a man named Lee Jin-gyu who fell in love and married his life-sized Japanese body pillow (called a "dakimakura").
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The average person will go on a date at least 100 times before they finally marry.
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8 out of 10 people think that the first kiss indicates how the rest of the relationship will be.
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When someone looks at a new love, the neural circuits that are usually associated with social judgment are suppressed.
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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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A couple had their wedding rings engraved with a waveform of their own voices saying "I do."
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