Holding hands with someone you love can alleviate physical pain as well as stress and fear.
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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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In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
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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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Speed dating was invented by a Rabbi in 1999.
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Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
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Studies show that the risk of a “secret love” being revealed heightens romantic feelings for the partners, thanks to increased levels of phenylethylamine (PEA).
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