When dragonflies mate, their tails form a love heart.
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Men who kiss their wives in the morning live five years longer than those who don't.
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In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
4
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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Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
39
Erotomania is a type of delusion in which the person believes another person is in love with him/her.
38
Kissing an infection-free partner is good for your teeth!
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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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