People are more likely to tilt their heads to the right when kissing instead of the left (65 percent of people go to the right!)
278
40% of people who are rejected in romantic love slip into clinical depression.
72
Couples' personalities converge over time to make partners more and more similar.
235
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
Historically, sweat has been an active ingredient in perfume and love potions.
309
Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
14
In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81
Speed dating was invented by a Rabbi in 1999.
45