A man's beard grows fastest when he anticipates sex.
239
Couples' personalities converge over time to make partners more and more similar.
235
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
Men fall in love faster than women do.
32
There's a love mattress that is specifically designed for couples who sleep on each other's arms.
12
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
Gary Kremen, founder of match.com, lost his girlfriend to a man she met on match.com.
69