When dragonflies mate, their tails form a love heart.
22
When you fall in love, that 'high' feeling is caused by a flood of dopamine that is similar to that of cocaine.
44
In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81
Historically, sweat has been an active ingredient in perfume and love potions.
309
Brain scans show that people who view photos of a beloved experience an activation of the caudate - the part of the brain involving cravings.
103
In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
4
Gary Kremen, founder of match.com, lost his girlfriend to a man she met on match.com.
69
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!)
278