When dragonflies mate, their tails form a love heart.
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Cuddling (or other ‘love’ acts) helps to heal physical wounds faster due to the release of Oxytocin which is proven to reduce swelling.
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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
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The typical person spends about 600 hours having sex between the ages of 20 and 70.
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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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Ten seconds of hugging a day increases levels of oxytocin, which can reduce blood pressure, thus cutting the risk of heart disease.
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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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