'X' became symbolic for a kiss because in the middle ages when alot of people were illiterate and they used to sign documents with an X and then kiss it for sincerity.
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The typical person spends about 600 hours having sex between the ages of 20 and 70.
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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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Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
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In 2012, a Chinese man named Xiao Fan had a dress made out of 9,999 red roses for his girlfriend and then proposed - 9 in China means forever
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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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If you mouth the word "colorful" to someone, it looks like you are saying "I love you".
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The left ear is more responsive to words of love and emotion whispered into it than the right.
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