A man's beard grows fastest when he anticipates sex.
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Couples' personalities converge over time to make partners more and more similar.
235
The left ear is more responsive to words of love and emotion whispered into it than the right.
44
Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
39
Historically, sweat has been an active ingredient in perfume and love potions.
309
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