One in five long-term love relationships began with one or both partners being involved with others.
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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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You burn 26 calories in a one minute kiss.
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Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
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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 you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
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In 1999, a fisherman found a love letter in a bottle from a soldier in WWI. He returned said letter to the now deceased widows 86 year old daughter.
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