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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Erotomania is a type of delusion in which the person believes another person is in love with him/her.
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In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
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Brain scans show that people who view photos of a beloved experience an activation of the caudate - the part of the brain involving cravings.
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When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
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Kissing an infection-free partner is good for your teeth!
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In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
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