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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Kissing an infection-free partner is good for your teeth!
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In medieval Italy, if a man was caught kissing a woman in public, he had to marry her whether he liked it or not.
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Erotomania is a type of delusion in which the person believes another person is in love with him/her.
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If you mouth the word "colorful" to someone, it looks like you are saying "I love you".
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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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When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
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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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