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
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
A man's beard grows fastest when he anticipates sex.
239
Erotomania is a type of delusion in which the person believes another person is in love with him/her.
38
There's a love mattress that is specifically designed for couples who sleep on each other's arms.
12
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 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81
Gary Kremen, founder of match.com, lost his girlfriend to a man she met on match.com.
69