You burn 26 calories in a one minute kiss.
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One in five long-term love relationships began with one or both partners being involved with others.
177
If you mouth the word "colorful" to someone, it looks like you are saying "I love you".
634
Two in five people in the world marry their first love.
270
The single biggest predictor of love is proximity.
30
Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
39
According to the New York Times, a study conducted during the 1980's found that men who kiss their wives before leaving for work live longer, get into fewer car accidents, and have a higher income than married men who don't.
14
Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
14