Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
39
You burn 26 calories in a one minute kiss.
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Parents receive 1 out of every 5 Valentines.
20
When you fall in love, that 'high' feeling is caused by a flood of dopamine that is similar to that of cocaine.
44
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
Gary Kremen, founder of match.com, lost his girlfriend to a man she met on match.com.
69
Historically, sweat has been an active ingredient in perfume and love potions.
309