In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
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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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Historically, sweat has been an active ingredient in perfume and love potions.
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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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People are more likely to tilt their heads to the right when kissing instead of the left (65 percent of people go to the right!)
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40% of people who are rejected in romantic love slip into clinical depression.
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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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In medieval Italy, if a man was caught kissing a woman in public, he had to marry her whether he liked it or not.
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