It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
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There's a love mattress that is specifically designed for couples who sleep on each other's arms.
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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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Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
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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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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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Parents receive 1 out of every 5 Valentines.
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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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