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.
25
When you fall in love, that 'high' feeling is caused by a flood of dopamine that is similar to that of cocaine.
44
Holding hands with someone you love can alleviate physical pain as well as stress and fear.
26
A man's beard grows fastest when he anticipates sex.
239
Studies show that the risk of a “secret love” being revealed heightens romantic feelings for the partners, thanks to increased levels of phenylethylamine (PEA).
99
If you mouth the word "colorful" to someone, it looks like you are saying "I love you".
634
Men who kiss their wives in the morning live five years longer than those who don't.
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