In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81
The left ear is more responsive to words of love and emotion whispered into it than the right.
40
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
8 out of 10 people think that the first kiss indicates how the rest of the relationship will be.
212
Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
14
When someone looks at a new love, the neural circuits that are usually associated with social judgment are suppressed.
130
