Men fall in love faster than women do.
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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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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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Gary Kremen, founder of match.com, lost his girlfriend to a man she met on match.com.
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The typical person spends about 600 hours having sex between the ages of 20 and 70.
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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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Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
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When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
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