In medieval Italy, if a man was caught kissing a woman in public, he had to marry her whether he liked it or not.
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8 out of 10 people think that the first kiss indicates how the rest of the relationship will be.
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Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
88
In Korea, if you do not receive any gift on Valentine's day then all the singles go to Korean restaurants and eat black noodles to celebrate (or mourn) their single status.
28
One in five long-term love relationships began with one or both partners being involved with others.
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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
Couples' personalities converge over time to make partners more and more similar.
235