When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
The single biggest predictor of love is proximity.
30
You burn 26 calories in a one minute kiss.
605
Sea otters hold hands while sleeping so they don’t drift away from each other.
104
People are more likely to tilt their heads to the right when kissing instead of the left (65 percent of people go to the right!)
278
The average person will go on a date at least 100 times before they finally marry.
33
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
