40% of people who are rejected in romantic love slip into clinical depression.
72
In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81
The average person will go on a date at least 100 times before they finally marry.
33
Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
104
Couples' personalities converge over time to make partners more and more similar.
235
Men who kiss their wives in the morning live five years longer than those who don't.
1k
Speed dating was invented by a Rabbi in 1999.
45
Historically, sweat has been an active ingredient in perfume and love potions.
309