In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81
The single biggest predictor of love is proximity.
30
Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
104
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
Speed dating was invented by a Rabbi in 1999.
45
The typical person spends about 600 hours having sex between the ages of 20 and 70.
234