Erotomania is a type of delusion in which the person believes another person is in love with him/her.
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Kissing an infection-free partner is good for your teeth!
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It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
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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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A Korean man called Lee Jin-gyu fell in love with his large, huggable pillow and married it.
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Twenty nine percent of women spend more time shopping for shoes than they do looking for a life long mate.
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Couples' personalities converge over time to make partners more and more similar.
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In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
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