Wearing red increases attraction.
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The single biggest predictor of love is proximity.
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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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There's a love mattress that is specifically designed for couples who sleep on each other's arms.
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Holding hands with someone you love can alleviate physical pain as well as stress and fear.
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A Korean man called Lee Jin-gyu fell in love with his large, huggable pillow and married it.
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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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In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
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