Historically, sweat has been an active ingredient in perfume and love potions.
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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.
27
When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25
The average person in their lifetime will spend an estimated 20,160 minutes kissing!
212
Couples' personalities converge over time to make partners more and more similar.
235
One in five long-term love relationships began with one or both partners being involved with others.
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8 out of 10 people think that the first kiss indicates how the rest of the relationship will be.
212
In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81