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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Couples' personalities converge over time to make partners more and more similar.
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Kissing an infection-free partner is good for your teeth!
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Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
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One in five long-term love relationships began with one or both partners being involved with others.
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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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Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
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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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