40% of people who are rejected in romantic love slip into clinical depression.
72
Men who kiss their wives in the morning live five years longer than those who don't.
1k
Wearing red increases attraction.
30
In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81
In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
4
The left ear is more responsive to words of love and emotion whispered into it than the right.
44
Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
104
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