Erotomania is a type of delusion in which the person believes another person is in love with him/her.
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If you mouth the word "colorful" to someone, it looks like you are saying "I love you".
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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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It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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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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In medieval Italy, if a man was caught kissing a woman in public, he had to marry her whether he liked it or not.
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