Brain scans show that people who view photos of a beloved experience an activation of the caudate - the part of the brain involving cravings.
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Wearing red increases attraction.
30
The single biggest predictor of love is proximity.
30
In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81
8 out of 10 people think that the first kiss indicates how the rest of the relationship will be.
212
The typical person spends about 600 hours having sex between the ages of 20 and 70.
234
Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
104