Holding hands with someone you love can alleviate physical pain as well as stress and fear.
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When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
Women rate men more attractive if other women are looking and smiling at him.
17
Historically, sweat has been an active ingredient in perfume and love potions.
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One in five long-term love relationships began with one or both partners being involved with others.
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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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Anuptaphobia is the fear of staying single.
11
In 2012, a Chinese man named Xiao Fan had a dress made out of 9,999 red roses for his girlfriend and then proposed - 9 in China means forever
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