Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
104
A couple had their wedding rings engraved with a waveform of their own voices saying "I do."
10
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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When someone looks at a new love, the neural circuits that are usually associated with social judgment are suppressed.
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40% of people who are rejected in romantic love slip into clinical depression.
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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.
39
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13