When you fall in love, that 'high' feeling is caused by a flood of dopamine that is similar to that of cocaine.
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You burn 26 calories in a one minute kiss.
605
Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
14
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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When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
According to the New York Times, a study conducted during the 1980's found that men who kiss their wives before leaving for work live longer, get into fewer car accidents, and have a higher income than married men who don't.
14
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.
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