In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
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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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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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There's a love mattress that is specifically designed for couples who sleep on each other's arms.
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The single biggest predictor of love is proximity.
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Two in five people in the world marry their first love.
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One in five long-term love relationships began with one or both partners being involved with others.
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40% of people who are rejected in romantic love slip into clinical depression.
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