In medieval Italy, if a man was caught kissing a woman in public, he had to marry her whether he liked it or not.
456
Wearing red increases attraction.
30
Gary Kremen, founder of match.com, lost his girlfriend to a man she met on match.com.
69
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.
28
When someone looks at a new love, the neural circuits that are usually associated with social judgment are suppressed.
130
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13

