Holding hands with someone you love can alleviate physical pain as well as stress and fear.
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Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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One in five long-term love relationships began with one or both partners being involved with others.
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A Korean man called Lee Jin-gyu fell in love with his large, huggable pillow and married it.
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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!)
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Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
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As a rule, 66 percent of people keep their eyes closed while kissing. The rest take pleasure in watching the emotions run the gamut on the faces of their partners.
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