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
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
Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
104
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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If you mouth the word "colorful" to someone, it looks like you are saying "I love you".
634
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
The single biggest predictor of love is proximity.
30