Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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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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As a rule, 66 percent of people keep their eyes closed while kissing. The rest take pleasure in watching the emotions run the gamut on the faces of their partners.
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The single biggest predictor of love is proximity.
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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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Erotomania is a type of delusion in which the person believes another person is in love with him/her.
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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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Sea otters hold hands while sleeping so they don’t drift away from each other.
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