A man's beard grows fastest when he anticipates sex.
239
In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81
You burn 26 calories in a one minute kiss.
605
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
40% of people who are rejected in romantic love slip into clinical depression.
72
In Korea, there's a man named Lee Jin-gyu who fell in love and married his life-sized Japanese body pillow (called a "dakimakura").
-2
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13