A man's beard grows fastest when he anticipates sex.
239
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
40% of people who are rejected in romantic love slip into clinical depression.
72
It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
165
Kissing an infection-free partner is good for your teeth!
141
Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
14
Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
88