There's a love mattress that is specifically designed for couples who sleep on each other's arms.
12
Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
14
Wearing red increases attraction.
30
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!)
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Couples' personalities converge over time to make partners more and more similar.
235
In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81
Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
88
8 out of 10 people think that the first kiss indicates how the rest of the relationship will be.
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