In 2012, a Chinese man named Xiao Fan had a dress made out of 9,999 red roses for his girlfriend and then proposed - 9 in China means forever
16
Wearing red increases attraction.
30
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
A man's beard grows fastest when he anticipates sex.
239
The left ear is more responsive to words of love and emotion whispered into it than the right.
44
In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81
Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
88