When you fall in love, that 'high' feeling is caused by a flood of dopamine that is similar to that of cocaine.
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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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A man's beard grows fastest when he anticipates sex.
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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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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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A Korean man called Lee Jin-gyu fell in love with his large, huggable pillow and married it.
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The left ear is more responsive to words of love and emotion whispered into it than the right.
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