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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Sea otters hold hands while sleeping so they don’t drift away from each other.
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Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
In Korea, if you do not receive any gift on Valentine's day then all the singles go to Korean restaurants and eat black noodles to celebrate (or mourn) their single status.
27
Brain scans show that people who view photos of a beloved experience an activation of the caudate - the part of the brain involving cravings.
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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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When someone looks at a new love, the neural circuits that are usually associated with social judgment are suppressed.
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Historically, sweat has been an active ingredient in perfume and love potions.
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