Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
39
The typical person spends about 600 hours having sex between the ages of 20 and 70.
234
There's a love mattress that is specifically designed for couples who sleep on each other's arms.
12
Men fall in love faster than women do.
32
Couples' personalities converge over time to make partners more and more similar.
235
Gary Kremen, founder of match.com, lost his girlfriend to a man she met on match.com.
69
Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
14