Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
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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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8 out of 10 people think that the first kiss indicates how the rest of the relationship will be.
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People are more likely to tilt their heads to the right when kissing instead of the left (65 percent of people go to the right!)
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The left ear is more responsive to words of love and emotion whispered into it than the right.
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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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Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
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