Intelligent men tend to be more sexually faithful.
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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
Holding hands with someone you love can alleviate physical pain as well as stress and fear.
26
Yawns are more contagious among people with closer relationships.
163
It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
165
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