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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Holding hands with someone you love can alleviate physical pain as well as stress and fear.
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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 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 Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
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Brain scans show that people who view photos of a beloved experience an activation of the caudate - the part of the brain involving cravings.
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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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Parents receive 1 out of every 5 Valentines.
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