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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A man's beard grows fastest when he anticipates sex.
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Kissing an infection-free partner is good for your teeth!
141
Two in five people in the world marry their first love.
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A Korean man called Lee Jin-gyu fell in love with his large, huggable pillow and married it.
29
When dragonflies mate, their tails form a love heart.
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