40% of people who are rejected in romantic love slip into clinical depression.
72
In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
4
In medieval Italy, if a man was caught kissing a woman in public, he had to marry her whether he liked it or not.
456
Historically, sweat has been an active ingredient in perfume and love potions.
309
Couples' personalities converge over time to make partners more and more similar.
235
Studies show that the risk of a “secret love” being revealed heightens romantic feelings for the partners, thanks to increased levels of phenylethylamine (PEA).
99
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
People are more likely to tilt their heads to the right when kissing instead of the left (65 percent of people go to the right!)
278