Parents receive 1 out of every 5 Valentines.
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Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
In Korea, if you do not receive any gift on Valentine's day then all the singles go to Korean restaurants and eat black noodles to celebrate (or mourn) their single status.
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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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Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
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In 2010, Gary Richmond was beaten into a coma. He woke up with amnesia and no memory of his wife of 20 years. Subsequently, he ended up falling in love with her all over again!
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There's a love mattress that is specifically designed for couples who sleep on each other's arms.
12
Men who kiss their wives in the morning live five years longer than those who don't.
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