Wearing red increases attraction.
30
Historically, sweat has been an active ingredient in perfume and love potions.
309
When you fall in love, that 'high' feeling is caused by a flood of dopamine that is similar to that of cocaine.
44
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
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.
40
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