When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
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 single biggest predictor of love is proximity.
30
Ten seconds of hugging a day increases levels of oxytocin, which can reduce blood pressure, thus cutting the risk of heart disease.
26
Brain scans show that people who view photos of a beloved experience an activation of the caudate - the part of the brain involving cravings.
103
If you mouth the word "colorful" to someone, it looks like you are saying "I love you".
634
According to the New York Times, a study conducted during the 1980's found that men who kiss their wives before leaving for work live longer, get into fewer car accidents, and have a higher income than married men who don't.
14
Historically, sweat has been an active ingredient in perfume and love potions.
309