Studies show that the risk of a “secret love” being revealed heightens romantic feelings for the partners, thanks to increased levels of phenylethylamine (PEA).
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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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When someone looks at a new love, the neural circuits that are usually associated with social judgment are suppressed.
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In Korea, there's a man named Lee Jin-gyu who fell in love and married his life-sized Japanese body pillow (called a "dakimakura").
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'X' became symbolic for a kiss because in the middle ages when alot of people were illiterate and they used to sign documents with an X and then kiss it for sincerity.
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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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