Couples' personalities converge over time to make partners more and more similar.
235
Sea otters hold hands while sleeping so they don’t drift away from each other.
104
Two in five people in the world marry their first love.
270
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
A man's beard grows fastest when he anticipates sex.
239
Historically, sweat has been an active ingredient in perfume and love potions.
309
In Korea, there's a man named Lee Jin-gyu who fell in love and married his life-sized Japanese body pillow (called a "dakimakura").
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