Speed dating was invented by a Rabbi in 1999.
45
The typical person spends about 600 hours having sex between the ages of 20 and 70.
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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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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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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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Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
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Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13