The typical person spends about 600 hours having sex between the ages of 20 and 70.
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Kissing an infection-free partner is good for your teeth!
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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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In medieval Italy, if a man was caught kissing a woman in public, he had to marry her whether he liked it or not.
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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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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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