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.
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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
It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
165
When you fall in love, that 'high' feeling is caused by a flood of dopamine that is similar to that of cocaine.
44
In 2012, a Chinese man named Xiao Fan had a dress made out of 9,999 red roses for his girlfriend and then proposed - 9 in China means forever
16
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
In 1999, a fisherman found a love letter in a bottle from a soldier in WWI. He returned said letter to the now deceased widows 86 year old daughter.
27