A man's beard grows fastest when he anticipates sex.
239
When you fall in love, that 'high' feeling is caused by a flood of dopamine that is similar to that of cocaine.
44
Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
39
40% of people who are rejected in romantic love slip into clinical depression.
72
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
Men fall in love faster than women do.
32
Two in five people in the world marry their first love.
270
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