40% of people who are rejected in romantic love slip into clinical depression.
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Raj from the Big Bang Theory is married to Miss India.
11
In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
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The single biggest predictor of love is proximity.
30
Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
Kissing an infection-free partner is good for your teeth!
141
Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
39