A man's beard grows fastest when he anticipates sex.
239
When dragonflies mate, their tails form a love heart.
22
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
Couples' personalities converge over time to make partners more and more similar.
235
Speed dating was invented by a Rabbi in 1999.
45
Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
104
40% of people who are rejected in romantic love slip into clinical depression.
72
Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
88