One in five long-term love relationships began with one or both partners being involved with others.
177
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
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
For Valentine's Day 2014, an unnamed man sabotaged a special screening of "Beijing Love Story" at a Shanghai cinema by booking every other seat, subsequently preventing couples from sitting together.
41
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
Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
14