There's a love mattress that is specifically designed for couples who sleep on each other's arms.
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Two in five people in the world marry their first love.
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If you mouth the word "colorful" to someone, it looks like you are saying "I love you".
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In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
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For Valentine's Day 2014, an unnamed man sabotaged a special screening of "Beijing Love Story" at a Shanghai cinema by booking every other seat, subsequently preventing couples from sitting together.
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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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The left ear is more responsive to words of love and emotion whispered into it than the right.
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Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
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