Speed dating was invented by a Rabbi in 1999.
45
Historically, sweat has been an active ingredient in perfume and love potions.
309
40% of people who are rejected in romantic love slip into clinical depression.
72
Couples' personalities converge over time to make partners more and more similar.
235
Men who kiss their wives in the morning live five years longer than those who don't.
1k
Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
88
When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25
When someone looks at a new love, the neural circuits that are usually associated with social judgment are suppressed.
130