In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
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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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A couple had their wedding rings engraved with a waveform of their own voices saying "I do."
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When dragonflies mate, their tails form a love heart.
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You burn 26 calories in a one minute kiss.
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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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8 out of 10 people think that the first kiss indicates how the rest of the relationship will be.
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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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