40% of people who are rejected in romantic love slip into clinical depression.
72
Couples' personalities converge over time to make partners more and more similar.
235
Gary Kremen, founder of match.com, lost his girlfriend to a man she met on match.com.
69
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
Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
88
Ten seconds of hugging a day increases levels of oxytocin, which can reduce blood pressure, thus cutting the risk of heart disease.
26
A man's beard grows fastest when he anticipates sex.
239
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