40% of people who are rejected in romantic love slip into clinical depression.
72
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.
28
Men who kiss their wives in the morning live five years longer than those who don't.
1k
Historically, sweat has been an active ingredient in perfume and love potions.
309
In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
4
Couples' personalities converge over time to make partners more and more similar.
235
Wearing red increases attraction.
30
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