There's a love mattress that is specifically designed for couples who sleep on each other's arms.
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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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The single biggest predictor of love is proximity.
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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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Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
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When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
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In 2010, Gary Richmond was beaten into a coma. He woke up with amnesia and no memory of his wife of 20 years. Subsequently, he ended up falling in love with her all over again!
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Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
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