Erotomania is a type of delusion in which the person believes another person is in love with him/her.
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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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Men who kiss their wives in the morning live five years longer than those who don't.
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According to the New York Times, a study conducted during the 1980's found that men who kiss their wives before leaving for work live longer, get into fewer car accidents, and have a higher income than married men who don't.
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'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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Speed dating was invented by a Rabbi in 1999.
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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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For Valentine's Day 2014, an unnamed man sabotaged a special screening of "Beijing Love Story" at a Shanghai cinema by booking every other seat, subsequently preventing couples from sitting together.
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